What is the basal temperature before menstruation


What is the basal temperature during menstruation should be observed? Basically, it is customary to measure BT immediately after waking up, without getting out of bed.

BT for all women is a mirror of health. The magnitude of BT can be judged whether there are any processes of inflammation, some reproductive problems.

What basal temperature should ideally be? In the normal state of normal BT should begin to rise during ovulation to 37.1-37.4 degrees. Such indicators will ideally hold until the onset of the menstrual period. 2-3 days before the onset of the menstrual period, BT decreases to 37-37.1 and constantly decreases to the last day of discharge.

But it also happens that the basal temperature during critical days, and after menstruation does not decrease, but increases. What does this indicate, and what illnesses can lead to such a phenomenon?

What is the basal temperature during menstruation should be observed? Basically, it is customary to measure BT immediately after waking up, without getting out of bed.

BT for all women is a mirror of health. The magnitude of BT can be judged whether there are any processes of inflammation, some reproductive problems.

What basal temperature should ideally be? In the normal state of normal BT should begin to rise during ovulation to 37.1-37.4 degrees. Such indicators will ideally hold until the onset of the menstrual period. 2-3 days before the onset of the menstrual period, BT decreases to 37-37.1 and constantly decreases to the last day of discharge.

But it also happens that the basal temperature during critical days, and after menstruation does not decrease, but increases. What does this indicate, and what illnesses can lead to such a phenomenon?

Why rises BT

In diseases such as endometritis or endomyometritis, the basal temperature during menstruation begins to increase from the first days and may reach 37.5 degrees, but at the same time, the overall temperature of a woman’s body is normal.

The second reason for the increase in BT is pregnancy, which was interrupted during the menstrual period. In the event that BT from ovulation until the end of the discharge reached a temperature of over 37 degrees, and in the last days or after the end of menstruation it went down very sharply, then there is a huge likelihood that a newborn pregnancy has failed.

Another reason for the increase in BT is the process of inflammation of all appendages. If the basal temperature during menstruation, from the very beginning to the end of the discharge, is above 37, then this may indicate a process of inflammation of the appendages.

No less significant reason for the increase in BT is the process of inflammation of the tubes, as well as the cervix. If BT during menstruation, or rather, in the last 1-2 days rises sharply, then this is evidence of inflammation in the cervix and tubes (provided that the discharge goes from 4 to 5 days).

However, if BT has increased by only 1 day, then this absolutely does not mean that the woman has any disease, or an inflammatory process occurs.

Measurement methods

Remember that there are rules for measuring BT, and you need to measure it correctly at any time:

  • the time of its measurement must be strictly observed; it can be measured a little earlier, but not later than always,
  • basal temperature after critical days, during or before their occurrence should be measured by one thermometer,
  • it should be measured through the oral cavity, vaginally or through the rectum, only 1 measurement method should be selected and used continuously,
  • It is necessary to measure BT immediately after waking up and at the same time not to make any sudden movements. This factor can lead to a change in testimony,
  • every hour, immediately after the woman wakes up, BT will increase, for this very reason it needs to be measured instantly,
  • follow the measurement time, if BT is measured vaginally or through the rectum, the procedure should take at least 5 minutes, if the measurement takes place through the oral cavity - 3 minutes,
  • should only use a mercury thermometer, as it shows more correct results,
  • It does not matter if BT is measured before or after menstruation - it should be measured in the supine position.

It is important immediately after the measurement to record the temperature in a special schedule, so as not to forget the result.

BT until the onset of the menstrual period is constantly going down, this process is unchanged.

In order to get more accurate and correct indicators of BT, it is necessary to measure it in the interval from 6 to 8 o'clock in the morning. In this case, it is very important that, before the measurement, a person has a quiet, healthy sleep for at least 3-6 hours.

Only a few days after the end of menstruation, BT keeps at around 36.5 to 36.9, after which it gradually decreases. And after ovulation, BT rises sharply.

Ideal performance

What should be the basal temperature in the norm? Need to focus on the following indicators:

  • the day before the end of menstruation, BT decreases to 36.3 degrees,
  • before the onset of ovulation, the basal temperature may rise to 37 degrees, it is believed that the female egg at this time is already ripe. It is at this time that a woman should adhere to a certain temperature regime,
  • during ovulation, the temperature can rise to the level of 37 degrees and above and hold until the onset of menstruation,
  • before the beginning of the monthly BT should gradually go down.

If fertilization of the egg has taken place, then BT with a mark of 37 degrees and above will be held throughout the 1st trimester of pregnancy.

BT before the onset of menstruation is not the same for every woman, since every human body is individual. But all the same, there are permissible norms for both increasing and decreasing BT. What can indicate such indicators?

If the temperature reaches 36.9 degrees before the onset of menstruation, but no jumps are noticeable in the second half, this indicates that the egg cell has not matured. Do not worry about it and worry about it. There are several anovulation periods throughout the year. But in the event that such indicators are observed constantly, one should seek the help of a specialist.

BT with a mark from 37.1 to 37.5 says about the onset of pregnancy. At the time of fertilization, progesterone is secreted in the woman’s body. Due to this hormone in the female body, all the necessary conditions are maintained in order for the fetus to properly and actively develop.

If BT before the onset of menstruation shows a mark of 37.3, then this indicates that some process of inflammation occurs in the female body. This mark can be achieved if there is an infectious disease with a general rise in body temperature. This factor is also reflected in the BT index.

If before the onset of menstruation, the BT index reaches 37.4 degrees, then this may indicate that there is not enough estrogen in the female body. In any case, with this indicator, in no case should we postpone the visit to a specialist.

Reasons for a change in basal temperature

In addition to all the factors listed above, there are several other factors that can influence the indicators at the time of BT measurement:

  • drinking alcohol the night before the measurement,
  • the dream of a woman lasted less than normal
  • if 6 hours before the measurement of BT, sexual intercourse was committed.

From the moment you decide to take the measurement of BT, first consult with a specialist. Consultation is especially important if a woman takes any medications that can lead to a change in indicators. These drugs include contraceptives, antibiotics, various hormonal and sedatives.

The basal temperature before the onset of the menstrual period, as in any other period, is a very sensitive value. Its indicators are capable of exerting enormous influence on a multitude of various factors. When measuring basal temperature, absolutely all rules must be observed.

If at the time of its measurement, you find yourself deviating one or another abnormality, then as soon as possible you should seek help from a qualified specialist. Remember that measuring BT during the menstrual cycle is just as necessary as on any other day.

Measuring the basal temperature, each woman can pay attention to the process and quality of work of her own body, determine the time of ovulation, learn about the occurrence of pregnancy. In order for all these processes to be observed, the measurement of BT must occur over several cycles in a row. These factors are very important for every woman, and that is why you need to be as attentive as possible to your own health. If you have any abnormalities, consult with your doctor.

What can be figured out using the basal temperature graph

When a woman reaches puberty, she wants to have an ideal cyclical process, to know the time of ovulation, to become pregnant at the planned time or, on the contrary, to prevent unwanted conception. For this purpose, along with tests for ovulation and other methods, temperature measurement in the rectum is widely used. That is why the question of what is the normal basal temperature before menstruation, what should be at the time of cell exit and standards for both phases, is very relevant in the lives of girls. Using the graph, you can identify such moments:

  • does follicle maturation,
  • ovulation day
  • hormonal disbalance,
  • future menstruation day,
  • the onset of pregnancy.

What is the basal temperature before menstruation (normal)

Before you determine what the basal temperature before the monthly rate is in your cycle, we recall that measurements should be carried out at least 3-4 months for the accuracy of the values ​​obtained and follow certain rules:

  • The measurement time is 5-7 minutes with a mercury thermometer or 1 minute with an electronic one,
  • Use the same thermometer, shaking it off in the evening,
  • The procedure should be done in the morning, immediately after 6 hours of restful sleep, without getting out of bed and without making sudden movements, preferably at the same time,
  • The data should be entered in the schedule, under which one should note the slightest deviations in the usual way of life (cold, stress, physical overstrain, alcohol consumption, etc.).

Properly compiled and correctly read schedule will help to identify the problem at an early stage, and eliminate it without consequences.

Temperature standards at different stages

The study must begin with the first day of menstruation. Values ​​during this period are elevated, and therefore are not taken into account. The average temperature on the last day of the month will be about 36.3 ° and, fluctuating in the range of up to 36.5 °, keeps the entire first phase. These are the most favorable conditions for follicle growth under the influence of estrogen.

What is the basal temperature before menstruation, depends on the behavior of the egg: fertilization happens or not. After the breakthrough of the follicle on the wall of the ovary, a yellow body forms at the site of the wound, producing a hormone progesterone. It is responsible for the fertilization and preparation of the uterus for the admission of the ovum, and increases the temperature indices to 37.0-37.5 °. Such values ​​are optimal for the development of pregnancy.

What is the basal temperature before menstruation per week

A standard graph of temperature values ​​over this interval will consistently record these numbers. In the case of conception, a similar pattern continues before and after the delay, which is the first sign of pregnancy, which can be confirmed by other symptoms and a positive test result.

Answering the question, what is the basal temperature before menstruation a week before they start will be recorded, the answer is unequivocal: 37 ° and higher, but not more than 37.5 °. Although at the 28-day cycle at this particular time it is possible to see the implant drop-down on the graph. It lasts a day, and a decrease in the thermometer is observed by several tenths of a degree. Sometimes it is accompanied by a barely perceptible pain in the abdomen and slight bloody discharge from the vagina. They notify the future mommy about the embryo insertion into the endometrial wall. However, the indicators are then aligned and become the same. Moreover, this phenomenon is not observed in all women.

What is the basal temperature before menstruation for 3 days

What will be the basal temperature before menstruation (for 3 days) depends on the individuality of each woman. Statistics indicate a decrease of 0.3-0.5 °. Standard values ​​are considered to be in the range of 36.8-37.1 ° at this very moment.

When asked what the basal temperature will be before menstruation (for 3 days), gynecologists answer that the average temperature will be 36.8-37.1 °.

Progesterone deficiency

  • Progesterone deficiency causing a downward curve in the graph. It is characterized by a slow rise in temperature, which lasts no more than a week. The difference of digital values ​​between phases becomes less than 0.4 °, the second period of the cycle is shortened to 10 days instead of 14, which causes the appearance of menstruation ahead of time,
With progesterone deficiency, the basal temperature first decreases, then rises and lasts about two weeks.


  • Endometritis, inflammation of the uterine mucosa, on the contrary, increases the temperature in the first menstrual days to 37 °. This is the basal temperature before menstruation and on the first day of bleeding is the hallmark of this disease. When, after a slight decline before the start, instead of going down further, a rise in indicators is observed, it is clear that it is impossible to do without going to the doctor,

The basal temperature before menstruation and on the first day, if there is such an inflammatory process, as endometritis stays at 37 °.


  • When confirming pregnancy, when the temperature is kept high - up to 37.5 °, menstruation did not start on time, and there is a discharge of blood from the vagina, indicating a threatened miscarriage. With a negative test and high temperature, the development of ectopic pregnancy is possible,

During pregnancy, the basal temperature will remain at up to 37.5 ° C for a long time.

Inflammation of the appendages

  • Inflammation of the appendages increases the thermometer, as in the first period of the cyclic process, and in the second. In the first half of the graph, an increase to 37 ° is recorded with a subsequent decrease. In the second, what is the basal temperature before menstruation for 2 days, the same holds true further, reaching a value of 38 °.

In the second cycle, with inflammation of the appendages, the basal temperature before menstruation will remain at 38 °.

What is basal temperature

Measurements of the usual temperature index, which are done, for example, during a cold (under the arm) are too approximate, they are rough. To fix the most subtle changes occurring inside, you will need direct access to internal tissues. Here it is necessary to clarify what is basal temperature. It is an indicator measured in the available cavities. There is access to the mouth, vagina and rectum. It is established that the least measurement is distorted when determining the temperature in the anus. Therefore, use just such a measurement. The change in evidence is associated with the production of hormones progesterone and estrogen in the body. When a corpus luteum forms on the site of a ripe egg, progesterone is produced in much larger quantities. After passing the critical days, progesterone in the blood decreases, as its large quantities leave the body with menstrual blood.

But at this moment the ripening of the follicle begins, and the level of estrogen in the blood increases. An increase in progesterone generally causes a rise in temperature, and a decrease in it and an increase in estrogen contribute to a decrease in BT. Thus, basal thermometry is a reflection of fluctuations in hormone levels.

What is the basal temperature before menstruation - the norm

One of the most important evidence of a healthy female body is considered to be basal temperature before critical days. It can vary, but within certain limits. Of particular importance is the preparation of the body for pregnancy. If conception, alas, or fortunately, does not happen, the preparation for menstruation will begin.

This period of the menstrual cycle is considered its second phase. At the same time, not only the progesterone level should increase, but also the estrogen level should decrease slightly. As a result, the blood must become hotter, as evidenced by the basal temperature. The rate is determined by the individual characteristics of a woman, her lifestyle, and metabolism. On average, this value is above 37 degrees. Сначала оно должно быть немного выше этого показателя, а затем чуть ниже.

Так, например, за неделю или дней 8-9 до менструации, первый день которой является началом цикла, уровень показаний термометрии должен быть от 37,1 до 37,2. По прошествии нескольких дней обязательно должно начаться постепенное снижение полученных данных. The basal temperature before the start of the new menstrual cycle, namely, 2-3 days before it, should begin to fall, decreasing smoothly, gradually. Its values ​​can be about 37 degrees and slightly lower. When the temperature does not fall, this is a signal to check with a gynecologist, since inflammation of the appendages is possible.

If before the monthly thermometry curve, 4-5 days before them, went a little down from the level of 37.1-37.2, and then rose again to these values ​​and continues to remain in the same range, not rising higher, such a graph of BT can signal that it is time to think about the high probability of pregnancy. The process and state of health should be kept under control, as in this situation there is a risk of miscarriage.

The beginning of a new menstrual cycle should never be marked by a strong upward movement of thermometry. Values ​​may vary slightly in the first day, and also in the second. But the readings do not normally increase to more than 37.3. When growth increases more than expected, for example, to levels of 37.5 and above, it is possible with a high degree of probability to speak of the presence of an inflammatory pathology.

  1. At values ​​around 37.5 and slightly higher, we are talking about adnexitis or inflammation of the appendages.
  2. When fever reaches 37.9 and above, endometritis can almost certainly be suspected.

On the third day of the menstrual cycle, or a little earlier, there should be a decrease in indications. At this point, progesterone production is reduced and continues to decline. It is followed by basal thermometry. Fall lasts all the time, until menstruation. By the end of bleeding, BT should be approximately 36.5 degrees. At the same time, depending on the individual characteristics, the indicators, of course, change. But the temperature should obviously be lower than in the period before the critical days.

Basal temperature after menstruation is normal

Termination of menstruation indicates the beginning of preparation for ovulation. In this period, an increase in estrogen level begins, while the basal temperature in women gradually decreases. Its value varies in the range from 36.3 to 36.7. Higher values ​​will not allow the follicle to develop and form a healthy egg cell. Making measurements, you can note that, as a rule, there are small fluctuations in the graph. The scatter of values ​​within 0.5 degrees lasts about a week. There is a special point to which attention should be paid. During the study period, there is a sequence of days when the data obtained are almost unchanged. At this point, the basal temperature after menstruation is constant. Its norm is not defined precisely. But after 5-6 days of this period of stability, three days are revealed, marked by a rise in the index by 0.1-0.2 degrees. Temperature ejection of 0.2 degrees occurs only in one of the days. Then the curve returns to the previous level. It is this fluctuation of thermometry values ​​that indicates the onset of ovulation.

How to measure

In order for the indications marked on the graph to objectively reflect the changes occurring in the body, you need to follow some important rules and avoid possible violations. To begin with it is necessary to prepare writing-materials - a notebook and a pen. You can later transfer the readings of the thermometer to a computer, because there are many programs that allow you to easily and quickly visualize the set, presenting it as a curve - a broken line or a smooth line. But at the initial stage it is enough to have only the opportunity to record the readings. In addition to the data determined on the thermometer, you need to record the date, as well as all the special situations that occurred on the eve of the measurement.

Although the process may seem simple, it is useful to get acquainted with tips on how to correctly measure morning basal indicators. The measurement is performed through the rectum.

  1. Thermometry is performed using the same instrument. A mercury thermometer is placed so that it penetrates into the cavity at a distance of 2-3 cm. BT is measured within 6 to 7 minutes. When using an electronic device, the time is reduced to 1-2 minutes.
  2. Before you measure, you need to sleep well. It is desirable that no alarms are observed at least 6-8 hours. When this is not possible, the testimony may not be informative. If restful sleep was less than 4-5 hours before the measurement process, these readings will be distorted due to the awakening of the adrenal glands and their effect on the hormonal background.
  3. Waking up, before you begin to measure the basal temperature, you can not even spin. In addition, of course, it is forbidden to get up, walk, sit down, drink or eat, and also shake off the thermometer.
  4. It’s necessary to have a number in the evening: a pre-thermometer, sheets of paper and a means of recording. Everything should be in close proximity, for example, on the bedside table.
  5. Measurement time every day should be the same. Optimally, if it falls on the interval from 5 to 7 in the morning. Further, if necessary, you can continue to stay in bed, fall asleep again. Allowed to change the exact time of measurement, but not more than 20-30 minutes.
  6. It should be borne in mind that the results obtained will most likely be distorted if a violation of the rules was made on the measurement days:
  • do not take psychotropic, sedative, stimulant drugs, alcohol,
  • do not have sex
  • do not be nervous,
  • not be subjected to great physical exertion
  • Do not overeat or starve.

Other factors also affect the information content of the readings. It is reduced:

  • diseases of the intestines and respiratory tract, as well as colds, poisoning, including exacerbations and chronic pathologies,
  • getting hormone therapy,
  • travel, hikes, changes in life,
  • manifestations of herpes.

Basal temperature 37, 2 - what does it mean

With the passage of the second half of the menstrual cycle, when oocyte maturation occurs, there is a greater likelihood of embryo formation and its implantation into the uterine mucosa. Of course, this situation is assumed in the case of sexual intercourse. But, nevertheless, this is not always the case.

When critical days are approaching, thermometric indicators, measured every morning, are on the rise. At the same time, it can be noted that the basal temperature is 37.2. What this means is not many people know. But doctors in such a situation suspect the occurrence of pregnancy. Indeed, in this case, a high level of progesterone is maintained. It is produced so that in the uterus the inner layer can grow enough. The embryo will be implanted into it later. It is progesterone that helps to thicken the inner layer and maintain a high temperature after pre-growth.

If conception for various reasons was not or it is objectively excluded, such a temperature, amounting to 37.2, can be held for a long time due to an excess of progesterone or an incorrectly performed measurement process. If there are no sharp jumps observed on the temperature chart obtained, the readings do not deviate by large values, it is recommended to wait for the menstrual period and follow the subsequent change in the graph. When there is no movement on it, or it occurs abruptly, it is possible that these are consequences of illnesses, stress and other causes. See a gynecologist would be superfluous.

What should be the basal temperature during ovulation

To be sure that the body is working properly, you need to make sure that the available basal temperature after ovulation is 37 degrees. A deviation of 0.1 degrees is possible. This helps to ensure that there are no failures in the production of the necessary hormones, progesterone is produced sufficiently, and the overall balance is not disturbed. The fact that there is a healthy production of estrogen, may also indicate the basal temperature before ovulation. What will thermometry, depends on the work of the ovaries. An egg cell matures in them, and this should take place at a temperature not higher than 36.6. Otherwise, the formation of the oocyte will not be implemented correctly.

So what is the basal temperature, measured before ovulation, can shed light on many secrets of the female body. For example, a rise in ovulation on a temperature graph leads to suspicions of inflammation. We need to think whether appendages could have had a cold. Infections and sometimes reduced immunity also sometimes contribute to inflammation. It is necessary to follow the diet, be examined, pass tests.

If the schedule of the measured morning temperature before ovulation, during ovulation itself, and also after it is an inexpressive accumulation of points located chaotically, without a clearly expressed picture of two levels, this makes it difficult to determine the date for such an important event. After all, if you know when ovulation has passed, you can assume the onset of pregnancy, as well as calculate the start time of the critical days, which occur in 2 weeks. But the lack of a clear signal on the temperature graph can raise doubts and concerns. The reason for the lack of a pronounced picture, speaking about the presence of ovulation, can be either a violation of the measurement rules, or the absence of ovulation itself. And this is already an undesirable pathology.

Making constant measurements, making a schedule for several cycles, you can find out what should be the basal temperature during ovulation in the next menstrual cyclic period. And it will help solve many problems, perhaps even fulfill dreams and hopes. And most importantly - to ensure their good health.

Opinion of doctors

Most of the processes that are carried out in the female body, are not without a trace. According to doctors, they can be determined by knowledge of a number of indicators, including temperature. Basal thermometry is intended to reveal many intimate secrets and features of the reproductive system. This method is able to talk about pregnancy long before it is determined by the results of ultrasound or tests for hCG. If you do the measurement procedure correctly and regularly, you can prevent the development of undesirable changes in the body. A well-done schedule can confirm a good state of health or suggest that a woman should consult a doctor.


Temperature graphs are easy to do, although at first there may be difficulties. But for the sake of such useful information you should try a little. Other ways to identify changes in the reproductive system is much more difficult. Measured values ​​differ very little. The whole range is within the range of 36.3 to 38 degrees. But at this temperature interval reflects the course of many processes. And this happens from month to month. As a result, knowing what today is and should be the basal temperature before menstruation, you can, for example, understand whether to plan a trip to the sea or it is better to pay a visit to the gynecologist.

Main rules for measuring BT

The basal temperature should be measured in the morning, immediately after waking up. Getting out of bed is not recommended. Any physical activity is undesirable. Even sharp turns in bed can lead to inaccurate values. That is why in the evening it is worth preparing a thermometer, shaking off the results of the previous measurement, putting it next to the bed.

When determining the temperature, several rules are followed:

  1. BT should be measured in the rectum. Oral and vaginal techniques may also be used, but they are not considered standard. The temperature determined in the rectum, more precisely.
  2. Measurements are taken daily at the same hour. A deviation of 30 minutes is allowed. Skipping the measurement at the right time, you need to consider that after each hour the basal temperature rises by 0.1 degrees.
  3. BT after waking up should be measured in the prone position. After that, the thermometer is removed from the rectum.

It is recommended to record the results in a basal temperature chart:

  • axes are drawn - Y and X,
  • Y axis is intended for basal temperature elevations,
  • On the X axis are days.

There are also special online services. In them the schedule is built automatically when entering information.

To notice the pattern, you need to measure over 3 menstrual cycles. The schedule allows you to find out the absence or presence of ovulation, to determine favorable days for conceiving a child, to suspect a dysfunction of the ovaries.

Basal temperature before, during and after menstruation

The menstrual cycle consists of several phases. One of them is called follicular. It starts after menstruation and lasts about 2 weeks before the time of ovulation. What kind of BT is considered the norm during this period? During the follicular phase, it should be no more than 37 degrees.

Before the release of a ripe egg from the ovary, BT decreases by 0.2-0.5 degrees. The graph allows you to notice. Lowering temperature is a precursor to ovulation.

The next phase of the menstrual cycle is ovulatory. It lasts about 3 days. At this time, the egg, ready for fertilization, leaves the ovary. The basal temperature rises to 37.4 degrees. The graph reflects the jump in BT. In some cases, its increase is not due to ovulation.

The reasons may be as follows:

  • the presence of any disease
  • overwork,
  • reception of alcoholic beverages,
  • lack of sleep (sleep lasts less than 6 hours),
  • sexual contact 6 hours before the measurement or earlier.

Approximately at 37 degrees, the basal temperature is maintained throughout the subsequent phase of the cycle, which is called lutein. Before menstruation, BT drops slightly. Basal temperature during menstruation (in the first days) may be about 37 degrees. By the end of menstruation, the schedule begins to reflect a decrease to 36.4 degrees.

Women's cycle regulation and basal temperature

It can be useful for any woman to create her own menstrual calendar or a special diagram of her cycle. In doing so, you can recognize your body, find out what is normal for you, and have benefits for your own health. Your menstrual cycle can in principle be divided into phases: the pre-ovulatory barren phase, the fertile phase and the post-vascular barren phase. You can determine at what stage you are by observing the three main fertility indicators: basal temperature, cervical fluid, and cervical position.

The menstrual cycle is under the direct influence of estrogen and progesterone, and the body reports daily on the status of these hormones. Estrogen dominates the first part of the cycle, progesterone dominates the latter. Another hormone, called luteinizing hormone (LH), is a catalyst that stimulates the ovary to release an egg cell. Ovulation (release of the egg) occurs once per cycle. During ovulation, one or more eggs are released. The egg cell can be active for 12-24 hours. All these processes affect the basal temperature.

Women who have natural menstrual cycles have a biphasic structure of basal temperature. The first phase of your cycle has low temperatures, and the second phase of your cycle has higher temperatures.

The first phase is called the follicular phase. This phase begins on the first day of your period each cycle and ends when you ovulate. After ovulation - luteal phase. After ovulation, the corpus luteum (remnants of the follicle that releases the egg during ovulation) produces a heat-inducing hormone, progesterone. Progesterone, produced by the yellow shell during your luteal phase, raises your core body temperature. The main reproductive function of progesterone in the luteal phase should cause changes that prepare the lining of the uterus for implantation of a fertilized egg. However, progesterone also leads to an increase in resting body temperature after ovulation. Since progesterone is only secreted at high levels after ovulation, it is possible to determine ovulation during the day before the temperature rises when the temperatures are plotted. The temperature range can vary from woman to woman, since each person is unique. If there is no pregnancy, your temperature will remain elevated for 10-16 days, until the corpus luteum regresses. At this time, if there is no pregnancy, the progesterone level drops sharply and you get menstruation. Your temperature usually drops at this time, although it is not uncommon to have unstable or high temperatures during your menstruation period.

But keep in mind that the basal temperature is the temperature of your body at rest, unchanged by other factors. It can be used to reliably confirm ovulation, since progesterone, which is produced only during the luteal phase, raises your core body temperature.

Basal Temperature Characteristic

Measuring your body temperature on a regular basis can help you know when there will be ovulation. Usually there is a decrease in temperature immediately before ovulation and a sudden increase after that.

What is basal body temperature? This is the lowest body temperature when it is measured in the morning after a rest. Это базовая линия значения, которая затем используется для сравнения любого повышения или падения в течение каждого месяца. Чтобы значения были эффективными, женщине нужно измерять ее температуру, прежде чем она даже встанет с постели и если она спит в течение, как минимум, четырех часов, и предпочтительно больше.It is very important to measure its temperature before eating, drinking or going to the bathroom and before any sexual activity - all this increases the heart rate and, in turn, the body temperature from the initial level.

How to measure? A digital thermometer may be easier to use than a mercury thermometer, and it is important to have a thermometer that measures Celsius readings, not Fahrenheit. Specially designed basic body temperature thermometers are available in pharmacies. From the point of view of accuracy (which is important when measuring basal body temperature), it is worth buying a new thermometer. Base thermometers provide more accurate temperature readings than standard digital thermometers. When using a basic thermometer, it is important to follow the manufacturer’s instructions. Each design is slightly different and to ensure accuracy, it is important to follow the steps in proper use.

The thermometer should be placed under the tongue and left there until it beeps. If you are using a mercury thermometer, you must leave it for three minutes to get an accurate reading.

When to start measuring your base body temperature? On the first morning of the menstrual cycle, as this indicates the beginning of each cycle. It is important to be sure that the value is accurate.

How to correctly mark the basal temperature? Take the obtained temperature value and tick X in the field where the date and temperature intersect. Connect each point with a line and see if there is a change during the month when the line goes up or down. Over time, you will probably see a sample of degrees that reflects your ovulation samples.

For each new month and each menstrual cycle, it is important to start a new chart. For each day of the month when you had sexual intercourse, circle the dot on the appropriate day or place a small symbol that looks like an asterisk (*) in the box at the bottom of the chart.

Remember that this is not so much an individual temperature measurement, which is important, but also a picture of the change between the first and second halves of the cycle. As a rule, in the first half (before ovulation) there is a lower temperature record and a higher “surge” (after ovulation) in the second half.

What are the changes in basal temperature throughout the month? During a regular 28-day menstrual cycle, the normal body temperature is around 36.5 ° C. Just before ovulation, your temperature is likely to drop to 36.2 ° C. This is normal for this to occur during 13-14 days of the cycle. Then, just as you ovulate, your temperature will increase, and it will rise until it rises to 37 ° C, where it will remain until the time of menstruation.

What should be the basal temperature before menstruation? The rate of this value is individual. But on average, this figure reaches 37, and then gradually decreases. How many days before the monthly basal temperature drops? As a rule, in 3-4 days there may be a slight decrease in temperature, but not lower than 36.8. The basal temperature a day before menstruation drops a little more to 36.5, and then reaches the lowest numbers just before ovulation itself. Thus, the schedule of basal temperature before menstruation has a constant value and is slightly lower than after ovulation. The basal temperature before menstruation during the day and in the evening may differ, but these values ​​are not significant.

But the basal temperature may be 36, 37, 38 before menstruation, which may be an individual feature or may indicate the presence of a concomitant condition in a woman.

Therefore, as a rule, women need to determine the temperature of the main basal body for three or more months before they see a predictable picture. It takes time to build confidence in the ability to predict ovulation or menstruation through temperature changes and other body changes.

Factors that can disrupt the morning temperature: fever, alcohol consumption per night, less than three consecutive hours of sleep before measuring temperature, the state of the thyroid gland.

How accurate are these changes in basal body temperature? Maintaining a base body temperature is not an accurate predictor of ovulation. In many ways, it is more useful as a tool for measuring ovulation after it has occurred, and not before. Keeping a record and then interpreting a picture of rising temperatures and falling will help you know when your most fertile time period is most likely. But remember that this is not a guarantee that you will become pregnant, and there are several factors that need to be aligned before conception. Not all women have a fever when they ovulate and, although it is considered normal, it is not a consistent pattern among all women.

A rise and fall in basal temperature before menstruation can have several causes. What is extremely low basal body temperature? There is usually a slight difference between the low temperature phase and the high temperature phase: this difference is from 0.3 to 0.5, and the basal temperature level is usually in the range of 36 to 37.

If you have less than 36.5 even during the high-temperature phase, this means that you have a low basal body temperature.

Low basal body temperature can be caused by many reasons, but one of the reasons is associated with changes in hormone levels. Because female hormones affect temperature, changes in the levels of secreted hormones, in addition to stress, accumulated fatigue, or lack of sleep, changes in diet can cause the body temperature to remain low. In addition, an unhealthy diet that doesn’t keep the body warm enough or has food that can lower your GBT level and thus worsen blood circulation is a factor that can contribute to low basal body temperature. Even if you have adapted well to problems and continue to maintain a healthy lifestyle, an increased level of hormone secretion may cause your thyroid gland or your reproductive organs to function more slowly and contribute to low basal body temperature. It is recommended that you visit a doctor and check yourself if your basal body temperature is constantly low for a period of 3 to 4 weeks.

Low basal body temperature can be, in some ways, corrected by lifestyle changes. Having a regular schedule that you follow, having adequate sleep and a balanced diet, can help regulate the secretion of hormones and increase your temperature. Find ways to help you cope with stress and don't let it grow, because stress can affect hormonal secretions.

An increase in basal temperature may be in the background of the disease and systemic hyperthermia, therefore this fact must be taken into account in case of such changes.

The basal temperature before menstruation may change, which allows you to plan your affairs during an irregular cycle. But an assessment of the basal temperature is possible only after a thorough analysis of temperature graphs, which are constructed for your observations for at least three months in a row.

Measurement rules

Under the basal temperature understand the temperature indicators obtained by measuring the rectal method, that is, in the rectum. This is not the only way to learn more about the work of your reproductive organs. Modern gynecologists prefer more accurate methods. For example, ultrasound, studies of the hormonal profile, tests for ovulation. However, the method of measuring BT is still popular because it is simple, free, accessible and quite informative.

For the accuracy of diagnosis, studies should be conducted daily for several months. The numbers are entered into a special schedule, with the help of which temperature fluctuations are monitored.

Rectal indicators differ from the usual temperature regime. After all, they fix the minimum values ​​of body heat only due to the functioning of the internal organs. Ideally, diagnostic muscle energy should be absent.

To achieve such conditions, when measuring BT, the following rules should be observed:

  • To diagnose immediately after waking up from a night's sleep at a certain fixed time,
  • Studies perform lying down, making the minimum number of movements,
  • Use only one thermometer, preferably mercurial,
  • Perform diagnostics only under the condition of full deep sleep for at least 5-8 hours.

Any deviation from these rules distorts the result.

In addition, many factors influence temperature indicators: stress, alcohol, drugs, etc. Therefore, it is advisable to point out any provoking factors on the graph next to the recorded digital results.

What happens during menstruation

Usually, the basal temperature is measured at the beginning of the monthly cycle, that is, on the first day of the month.

The initial phase of the cycle is characterized by the removal of accumulated toxins from the body. Therefore, before menstruation, women feel a certain physical discomfort:

  • Pulling pains in the lower back or lower abdomen,
  • Soreness and small tightness in the chest,
  • Dizziness,
  • Frequent headaches.

In addition to physical changes, women feel strong mood swings, gratuitous anger or depression.

This condition is associated with drastic changes in hormonal levels. At the end of the luteal period, there is a maximum amount of progesterone produced by the body. The hormone is very active in this phase. If conception does not come, then its concentration decreases. It is replaced by estrogen, which replaces progesterone in the menstrual period.

During menstruation, the endometrium begins to reject its functional parts, which is manifested in the appearance of bleeding. After a few days, the endometrial cavity is restored, and the menstrual flow ends.

On average, a woman's body loses every day from 20 to 60 g of blood, which is significantly different from the usual blood loss: it does not curl and has a specific smell.

Drastic hormonal changes lead to the manifestation of psychological and physical imbalance. Although some women have never experienced the manifestations of premenstrual syndrome and tolerate natural functional changes quite well.

These hormonal surges change the indications of BT in different phases of the cycle. According to their values, they determine not only “important” days for conception, but also various deviations in women's health.

A number of doctors believe that during critical days you can not take measurements, because during this period the numbers are not as important as, for example, in the middle of the cycle. And they certainly are not advised to use the vaginal method of measurement - during the period of bleeding it is unhygienic and even harmful.

Consider what the basal temperature should be during menstruation and why its indicators may differ from the norm.

Temperature standard

The basal temperature during menstruation may vary for different women, because we are all different. But the general trend is important. On the graph of BT to the beginning of menstruation, the curve line should clearly indicate a decline. On day 16-25 of the cycle, the temperature in the anus is normally steadily higher than 37.

By the first "critical" day of measurement should fix the numbers 36.8-37.0. This rule may vary slightly. In this case, the usual indicators of body temperature will remain familiar - 36.5-36.7.

In the future, regardless of the duration of critical days and the abundance of discharge, the numbers must necessarily decrease. And by the end of menstruation, the indicators drop to the level of 36.2-36.6.

If my BT is "wrong"

Despite the fact that the above figures are averaged, significant deviations from them indicate the development of pathological processes in the body.

If measurements of BT throughout all critical days record high numbers (from 37.1 to 37.9), this may indicate the presence of inflammatory processes. Pathologies can be identified in the uterine lining or in the organ itself. A distinctive feature of "female" inflammation is the absence of obvious symptoms and normal body temperature, measured in the usual way.

That is, if you have 36.5 in your armpit, and BT is 37.2 on the 5th day of the cycle, then you need to see a gynecologist. If the temperature is elevated both there and there, then the cause must be sought in some general disease. For example, you have a banal SARS.

Inflammation in the appendages is characterized by a constant increase in performance during all critical days. If the duration of critical days is from 3 to 5 days (that is, it is normal), and after menstruation a rapid increase in numbers on the thermometer is observed, then there may be an inflammatory process in the fallopian tubes.

If the monthly scanty and unusual feelings, and while BT is consistently high, it can speak about pregnancy, but with the threat of its termination.

In the event that a sharp jump in indicators was recorded for a short time, for example, a day, you should not worry. Most likely, such changes are associated with psychological causes or errors in measurements, since a longer period is required for the development of inflammation.

An insufficient amount of estrogen will affect the high figures of rectal temperature just before the beginning of menstruation (37.5).

Temperature 37 and above, which does not decrease, starting from ovulation and up to the planned menstruation (and then the monthly ones never arrive), most often indicates the onset of conception.

This is due to the fact that after the birth of life, progesterone continues to be actively produced, not allowing estrogen to rise. Therefore, the entire first trimester of pregnancy indicators of BT will be elevated. Only by the beginning of the fourth month the amount of the hormone will begin to decline slightly. This is reflected in the figures of rectal temperature.

Any significant deviations from the average values ​​require consultation with a gynecologist.

If the curve "jumps"

Significant fluctuations in the curve on the graph do not always mean the onset of pregnancy or pathology in the urogenital area of ​​a woman.

Quite often this is due to the violation of important rules for measurements. To measure the basal temperature should be following the recommendations of which we spoke above.

In addition, before the study, it is necessary to exclude provocative factors that significantly distort information:

  • Medication,
  • Sexual intercourse
  • Stress,
  • Significant physical exertion
  • Emotional stress
  • Climate change
  • Drinking alcohol, even in small doses.

As can be seen from the above examples, numerous factors can affect the figures in the rectal temperature graph. Therefore, this method cannot be considered absolutely reliable.

However, knowledge of what the basal temperature should be normal will help a woman to independently detect abnormalities in the reproductive system and consult a doctor in time.

A gynecologist, after reviewing the provided graphs, will prescribe appropriate diagnostics and laboratory tests. With their help, the doctor will confirm or refute the assumptions about possible pathological changes in the body.

What you can learn from the graph of temperature changes

Comparing the graphs of temperature changes over several months (preferably not less than 12), a woman will be able to determine on which day of the cycle she ovulates, and therefore, determine the time of possible conception. For some, it helps to approximately determine the "dangerous days" in order to be especially carefully protected before their onset. However, the probability of error is large enough. Even absolutely healthy women may have unexplained failures before menstruation, at least occasionally. Therefore, you should not trust this method to 100%.

By the type of curve obtained, it is determined whether ovulation occurs in each particular cycle, it is concluded that the ovaries function sufficiently well, whether the production of female sex hormones is in line with the norm.

The location of temperature points on the eve of menstruation makes the assumption that fertilization has occurred and establish pregnancy at the earliest time. Confirm or refute this assumption will be able to doctor after palpation of the uterus and ultrasound examination.

How the basal temperature changes during the cycle (ovulation, before menstruation)

If a woman is healthy, her cycle is regular, then immediately after the end of menstruation (the phase of maturation of the follicle with the egg), the temperature rises slightly (up to 36.5 ° -36.8 °). Then in the middle of the cycle (before ovulation), it decreases to 36 ° -36.2 °, reaching a minimum at the time of the rupture of the follicle and the release of a mature egg from it.

After that, there is a sharp rise (the phase of maturation of the corpus luteum and enhanced production of progesterone in it) to 37 ° -37.5 °, and before the monthly basal temperature again gradually decreases until the last day of the cycle to approximately 36.5 °.

Конкретные значения базальной температуры у каждой женщины различны, так как на них влияет множество факторов: индивидуальные особенности физиологии, климатические условия, образ жизни и многое другое. Но остается общая закономерность: падение температуры в момент овуляции, последующий резкий рост в течение нескольких дней и постепенное падение перед месячными.

As an example, we can present the following graph (cycle time 23 days, ovulation occurs on day 9, conception is possible from day 5 to day 12).

A warning: Fertilization is possible only after ovulation, but if the sperm got into the tubes of the uterus before it is already a few days, it is likely that a meeting of sperm and egg will take place. On all the other "non-dangerous days" of the cycle, due to the action of hormones, an environment is created in the vagina, so that the spermatozoa die before reaching the uterus.

The measurement results may deviate if the woman overworked or fell ill the day before, as well as if she did not sleep, took any medications (for example, paracetamol for headaches), took alcohol. The result will be inaccurate even if sexual contact took place within the last 6 hours before measuring the basal temperature.

What do the temperature curve deviations from the norm mean?

The basal temperature before menstruation should normally fall by 0.5 ° -0.7 ° compared with the maximum value at the beginning of the second phase of the cycle. There are several options for deviations:

  • temperature reading before the month does not fall,
  • it grows before the month
  • the temperature variation during the cycle is very small,
  • changes in basal temperature are chaotic, it is impossible to catch the pattern.

The cause of such deviations may be the onset of pregnancy, as well as pathologies associated with hormonal imbalance and ovarian functioning.

Basal temperature during pregnancy

After ovulation, in the second half of the cycle, progesterone plays a major role in the ratio of hormones. Its enhanced production begins at the time of formation of the corpus luteum at the site of the egg that left the ovary. This is due to a sharp increase in temperature on the graph. If the basal temperature before menstruation remains elevated, its value is approximately constant (about 37.0 ° -37.5 °), this may indicate a pregnancy.

For example, in this 28-day cycle graph, you can see that on day 20 of the cycle the temperature dropped. But it immediately began to grow, and during the last days before the monthly periods it remained at an elevated level of 37 ° -37.2 °. A drop in temperature of 20-21 days occurred at the time of implantation of the embryo in the uterus.

With the help of graphics, you can make only an assumption about what happened conception. The difficulty is that there may be other reasons for the increase in basal temperature before menstruation, for example:

  • the occurrence of gynecological inflammatory or infectious diseases, worsening of general well-being,
  • receiving a large dose of ultraviolet radiation after a long stay at the beach,
  • abusing alcohol or strong coffee the night before.

However, this tendency to a change in temperature indicators can be considered one of the first signs of pregnancy.

The failure of the second phase of the cycle

There are cases when before the onset of menstruation the basal temperature not only does not fall, but also grows by 0.1 ° -0.2 °. If it is also seen that the duration of the phase from ovulation to the following menstruation is less than 10 days, it can be assumed that in this case there is a deficiency of the luteal phase. This means that progesterone is not enough to ensure the normal implantation of the embryo in the uterus, the woman has a high probability of miscarriage. In this case, she needs treatment with progesterone-based drugs (duphaston, for example).

Estrogen and progesterone deficiency

A situation is possible in which, as a result of any endocrine disorders or diseases of the ovaries in the body, there is not enough female sex hormones. The graph will show that ovulation begins, the cycle is two-phase, but the change in performance, starting from 1 day and ending with the temperature before the menstrual period, is only 0.2 ° -0.3 °. Such pathology is often encountered in the treatment of infertility.

If the body does not have enough estrogen, the schedule will be an alternation of chaotic spikes and temperature drops. At the same time there is no way to notice when ovulation occurs and whether it happens at all. However, if you get a schedule of this kind, it does not necessarily mean that a woman has this pathology. Temperature jumps could occur for another reason: due to stress associated, for example, with the move to a new apartment, the occurrence of any disease.

Anovulatory cycles

Cycles without ovulation cause infertility. They can occasionally be observed in every woman. Pathology is their appearance for several months in a row. At the same time, on the graph you get a broken line almost flat, on which just before the monthly basal temperature is practically the same as on other days. There is, as they say, "single-phase" (anovulatory) cycle.

When to visit a doctor

If the temperature value before the month rises above 37.5 °, the graph does not have a pronounced drop in the middle of the cycle followed by a sharp surge, the temperature variation during the whole month is not more than 0.3 °, the woman is recommended to visit a gynecologist. You may have to do an ultrasound and pass a blood test for hormone levels.

How to measure?

What is the basal temperature before menstruation in a woman can be found by following the recommendations:

  • always take the measurement in the same way - orally, rectally or vaginally,
  • to measure only after a full sleep (at least 5 hours),
  • the temperature should be measured every day at the same hour, for example, at 7 am (a difference of half an hour is allowed, not more),
  • measure BT without getting out of bed (the thermometer should lie side by side within an outstretched hand).

It is best to make measurements using a mercury thermometer and rectal method.

It is important to mark everything in your chart that may affect the numbers:

  • use of any drugs the day before,
  • sexual intercourse,
  • taking contraceptives
  • drinking alcoholic beverages
  • measurement time offset,
  • use another thermometer.

If you follow all the rules, a well-made schedule of BT will be useful for a doctor who can get important and necessary information.

What should be or norms of values

The question of what should be the basal temperature before menstruation is of interest to many women.

The numbers may vary depending on the phase of the cycle:

  • The highest rates are observed in the luteal phase (its duration is on average about 14 days). They can range from 36.8 to 37, 1, 37.2 and even up to 37.5 degrees.
  • Before menstruation, the basal temperature is normally lowered by several divisions. As a rule, on the first day of the monthly thermometer shows about 37 degrees. At the completion of menstruation, BT decreases below 36.5.
  • With regard to the follicular phase of the monthly cycle, when ovulation begins in the female body, rates can range from 36.6 to 36.9 degrees.

Basal temperature before menstruation

It is important to start research right from the first day of your period. The indicators are slightly too high, so you shouldn't be scared right away. At the end of the month the temperature will be around 36.5, and this figure is shown throughout the first phase of the cycle. Such body temperature conditions are necessary for the growth of the follicle, which occurs under the influence of the hormone estrogen.

Before ovulation, that is, when a mature egg must leave the ovary, BT increases to 37 and may be slightly higher. These indicators indicate ovulation occurred and the beginning of the second phase.

How many days before the monthly basal temperature drops? It all depends on whether there was a conception or not. After the egg is released from the ovary, at the place of its location, a yellow body appears, which begins to produce progesterone vigorously. This hormone is responsible for the conception and introduction of the ovum into the lining of the uterus. It is progesterone that raises the basal temperature to indicators above 37 degrees, which is necessary for the start and development of pregnancy in a woman’s body.

The answer to the question of which basal temperature before menstruation per week will be normal is from 37 to 37.5 degrees. If fertilization occurred during this period, there will be a noticeable slight decrease in the numbers by a few tenths on the graph. This indicates the implantation of the embryo, which can cause symptoms such as weak pain in the lower abdomen, as well as minimal vaginal discharge with a small admixture of blood. Further indicators of BT are aligned and kept at the same level.

If fertilization has not occurred, then by reducing the amount of progesterone the numbers decrease. Consequently, the rate of basal temperature before menstruation will be about 37.

BT 2 or 3 days before menstruation depends largely on the characteristics of each organism. The rates are from 36.8 and up to 37.1 these days.

During pregnancy

The process of fertilization and further gestation affects the functioning of the whole organism. Therefore, it is always displayed on the BT graph.

If a woman makes measurements correctly and follows all the recommendations, she will easily see on the curve that the pregnancy has begun.

When conceiving on the chart, you can see the excess of indicators over 37 degrees and their preservation for at least three days. The numbers must be compared with the same period of the previous cycle. If the temperature rise over the duration of more days than usual, we can talk about conception.

A high level of basal temperature for more than 3 weeks is pregnancy.

Reasons for raising

Maintaining a high basal temperature before menstruation, over 37 or more, may indicate problems in the body.

The following conditions can cause high performance:

  • Inflammatory processes. When inflammation of the appendages of BT in the follicular phase exceeds the rate of 37 degrees. Before menstruation, the temperature can rise to 39 degrees and is accompanied by weakness, pain in the lower abdomen.
  • Endometriosis. In this case, before menstruation, the temperature decreases as usual, but rises again at the onset of menstruation.

Can there be monthly during pregnancy? Read in the article about the possibility of menstruation after conception, the causes of bleeding in early pregnancy, recommendations for women.

Why does chest pain occur before menstruation? Details on the link.

How to make a schedule?

Basal temperature before menstruation allows you to get a lot of important information.

For this reason, gynecologists recommend making a schedule in the following situations:

  • impossibility of conception for one year,
  • hormonal imbalance
  • infertility diagnosis.

In addition, the well-made schedule of BT allows you to find out the following:

  • when ovulation starts,
  • problems in the functioning of the reproductive system,
  • are hormones produced in the ovaries,
  • date of the next menstruation,
  • whether conception happened.

When drawing up a schedule, the following items should be displayed on a piece of paper:

  • date,
  • cycle day
  • basal temperature value.

Normal basal temperature chart

If the chart shows abnormalities, it is important to go to the doctor in a timely manner. Diagnostics will be conducted to identify pathologies in the body.

What every woman should remember when drawing up the BT schedule is the correctness of measurements, the data is always received at the same time. That is what will allow you to see the most reliable results.

Features of BT in the menstrual cycle

The monthly cycle has two phases: follicular and luteal. They are divided by ovulation occurring on the day, favorable for the fertilization of the egg. In each of the phases, the temperature can change, and it should.

Many have heard about the so-called, natural, or calendar, method of protection from unwanted pregnancy on "safe" days - the time before and after menstruation. These days are calculated according to a basal temperature chart. In order to determine the "safe days", you need to understand how the female body behaves in the days preceding the month and after them.

The basal temperature indicates when there will be menstruation, whether ovulation has occurred, whether there is an inflammatory process in the body.

Proper measurement of basal temperature, in compliance with all requirements (without getting out of bed after sleep, at the same time, in the same way), allows you to build an accurate schedule and let you know about the failures in the body, if any, or determine the exact phase of the menstrual cycle.

The basal temperature after menstruation lasts for several days within 36.6-36.9 degrees. Then it gradually decreases, and ovulation gives a sharp jump in temperature.

The average menstrual cycle lasts about 28 days, ideally the temperature graph will be as follows:

  • The day before the end of menstruation, the temperature drops to about 36.3 degrees,
  • Before ovulation, temperature increases to 37,
  • Ovulation occurs when the temperature increases to 37 and slightly higher,
  • Before the arrival of menstruation, the temperature tends to decrease, and if fertilization has taken place, then temperatures above 37 will last most of the pregnancy.

Before menstruation, not all women maintain the same temperature, each female body is different, but there are certain criteria in the temperature chart if the body functions normally: the temperature before menstruation is closer to 37, then a jump up before menstruation and a gradual decrease after them. If the schedule is even, then ovulation does not occur, and infertility can be stated. True, this can only be asserted on the basis of several menstrual cycles, because some months can be anovulatory. However, if the schedule from month to month remains smooth - this is a reason for going to the doctor - the egg does not mature.

Pathological BT

Temperatures in excess of 37 degrees before the onset of menstruation will indicate that there is an infection in the body or inflammation with a general elevated body temperature.

Indications BT before menstruation stopped at around 37.4 - this is most likely a lack of estrogen, you need to visit a gynecologist.

BT during menstruation has indications of 36.5-36.9 and remains at the same level after the end of menstruation for a few more days, and then goes down.

Disturbances in the BT schedule may occur due to such external factors:

  1. Taking alcohol shortly before bedtime
  2. The duration of sleep was less than usual
  3. Sexual intercourse 6 hours before the measurement,
  4. Acceptance of hormonal drugs or contraceptives, as well as antibiotics or sedatives.

If you think that the basal temperature measurements were carried out correctly, but there are abnormalities, then with the data obtained, go to a specialist who can draw the right conclusions and schedule an additional examination if necessary.

Basal temperature during menstruation

BT temperature according to the rules begins to change in 1 day of menstrual flow. Depending on the phase, the indicators vary significantly.

The higher the temperature, the closer the onset of the ovulation phase - a favorable period for conceiving a child.

Growth in basal temperature due to follicle maturation

Accordingly, with a decrease in this indicator, the chances of fertilization are significantly reduced, since the growth of BT indicates the maturation of the follicle under the influence of estrogen (a hormone produced by the ovaries).

To get pregnant, the optimum temperature is 37.0 - 37.5 degrees.

BT indicators to monthly

7 days before menstruation, the indicator is stable. It is equal to 37.0 °. In rare cases, rises to 37.5 °.

If a woman's menstrual cycle consists of 27 days (the norm is 28), then a week before the onset of menstruation, the temperature will jump due to implantational depression (attachment of the ovum to the endometrium in the uterus).

The stability of the basal temperature due to the attachment of fertile eggs to the uterus

The merger of the sperm cell with the egg occurs on days 1-3 of ovulation. Then, 10-14 days, the fetal egg descends through the fallopian tube to anchor.

Implantation retraction causes discomfort, slightly palpable pain on one side of the reproductive system.

In rare cases, the embryo can be indicated by vaginal discharge mixed with blood. Many women confuse this with the onset of menstruation.

When embedded in the endometrium, it is slightly damaged and bleeding. 3 days before the expected menstruation, the index drops from 0.3 ° to 0.5 °. Normally, they range from 36.7 ° - 37.1 °.

BT indicators during menstruation

On the first day, the monthly basal temperature ranges from 36.7 ° to 36.8 °. This is considered normal.

In the early days of menstrual flow, a woman may feel unwell. Her body is cleared of accumulated toxins.

Do not take pain in the lower back, stomach as a signal of the disease. In addition, girls have a general weakness, dizziness and headache.

Headache during menstruation

The rate of basal temperature during menstruation is less than 36.8 °. On the third day there is a sharp decline.

Базальная температура на 4 день месячных должна снизиться в пределах 36.2° — 36.3°. На 5 сутки она немного увеличивается. На 6 день во время месячных базальная температура должна быть не больше 36.3°.

Причины изменения БТ

Базальная температура меняется из-за частых перелётов. Причиной становятся воспалительные процессы в организме женщины или острая респираторная инфекция.

The rates vary due to the deficiency of progesterone in the female body. In this case, there is a slow rate of increase over a period of 6 to 8 days.

Another reason is endometritis (an inflammatory process that affects the inner mucous layer of the uterine organ). This disease is manifested by an increase in BT to 37.0 ° on the first day of the menstrual cycle.

Change in basal temperature due to endometritis

  1. Purulent, bloody discharge.
  2. Aching pain in the abdomen.

The most common cause of deviations from the norm is pregnancy. If she proceeds without complications, then the girl's menstruation does not occur. The basal temperature during pregnancy during the onset of menstruation exceeds 37.5 °.

Polycystic ovaries often cause a lack of ovulation. In this situation, the basal temperature during menstruation is not consistent. On the graph, this is represented by a chaotic set of points, therefore, it is impossible to understand when there was a rise, and when a recession is impossible.