Basal temperature during menstruation (norm): BT after menstruation (37), on the first day

Many girls who want to get pregnant and have a baby as soon as possible use several methods at the same time. calculation of the most favorable days for fertilization, including the measurement of basal temperature (BT). With this method, you can really track the end of one phase of the cycle and the beginning of the next, determine the days of ovulation and increase the chances of conception. Basal temperature during menstruation is of no small importance if there is a delay, because its indicators may indicate the onset of fertilization. Outside of pregnancy, BT during menstruation reveals hidden gynecological diseases and hormonal disorders.

Basal temperature concept

Translated from Greek, basal is "basic", therefore, the baseline body temperature is taken as indicators obtained during measurements on the surface of mucous membranes in the natural openings of the human body (rectum, oral cavity, vagina). The data obtained are therefore called basal, because they are the closest to physiological. A temperature that is within normal limits means that a woman's health and, most importantly, her reproductive system is in good condition.

Measurement of BT after the end of menstruation, during them and at the end of the cycle, for a long time, almost no one conducts in the vagina or mouth, since the obtained indicators can be distorted. Basal temperature is most accurately reflected by measurements in the rectum.

For what purposes are BT measurements carried out?

To get a full-fledged basal temperature chart for a particular woman, the change in thermometer indicators must be monitored for at least four months in a row. The results obtained during one menstrual cycle will not allow correctly assessing the state of the reproductive organs and hormonal balance.

The BT graph can provide the gynecologist with a lot of important data:

1. BT values ​​during the period of the expected critical days, if the lady has a delay, will help to identify pregnancy at the earliest possible date.
2. You can track when the ovulatory phase of the cycle begins and whether the egg is ready for fertilization.
3. It makes it possible to reveal hidden gynecological pathologies and inflammatory processes.
4. Determine how well the endocrine system performs its work.
5. Evaluate whether the ovary produces the hormones prevailing in a certain cyclic phase in the correct amount.

For women who have been unable to conceive for a long time, measuring basal rates will help to identify possible causes of infertility - lack of ovulation, hormonal deficiency, affecting the implantation of the embryo into uterus.

Many girls use the BT method to conceive a baby of a certain gender, depending on the day of the cycle.

Measurement rules

In order for the basal temperature after menstruation and in other phases to be measured correctly, a number of simple rules should be observed, because a woman's body is very susceptible to changes in the external environment:

1. Make measurements with the same thermometer, preferably mercury - it is more accurate and gives less error.
2. Taking measurements immediately after waking up, without making sudden movements and without getting out of bed - the best time to fix BT is from 05.00 to 07.00 in the morning.
3. It is preferable to measure the temperature in the rectum, keep the thermometer for at least five minutes, at a depth of 2-3 cm, then immediately write down the result.
4. Temperature is measured only after 5-6 hours of uninterrupted sleep.
5. Fix the marks in the calendar if the measurement was carried out after having sex, eating fatty, smoked, salted foods, stress and lack of sleep.

Basal indicators should not be measured if a woman is diagnosed with an acute viral or bacterial infection proceeding against a background of high body temperature. BT results in such a situation will be incorrect.

Changes in temperature indicators throughout the monthly cycle

It is necessary to start drawing up a BT schedule on the first day of menstruation - the physical indicators of the thermometer at this time are slightly increased, so this indicator is rarely taken into account. It should be understood that the data obtained during the measurements does not constitute any diagnosis if there are deviations from the norm. Only a specialist can suspect a disease, which is evidenced by significant changes in normal BT indicators.

During menstruation

The norm of BT for menstruation is the thermometer readings of 36.8–37 ° C. The dominance in the female body of the hormone progesterone has just ended, which is necessary to create a thick and lush endometrium, which ensures the introduction of the embryo into the wall of the uterus. At this time, a woman may feel weak, she has a pulling pain in the abdomen, radiating to the lower back. Some girls complain of a slight feeling of nausea and dizziness. These symptoms are not dangerous - the body is cleared of toxins.

On the third day of menstruation, the basal temperature decreases from 36.8 ° C to 36.4–36.5 ° C, on the fourth day of menstruation, the indicators become even lower and stay at 36.2–36.3 ° C. On the fifth or sixth day, the thermometer will show 36.3–36.4 ° C.

After menstruation

During the follicular phase, under the influence of estrogen and follicle-stimulating hormone, the process is triggered maturation of follicles in the appendages, one of which will eventually displace the rest, will become the largest, bearing egg cell.

Basal temperature on the first day of the onset of menstruation is kept at 36.7-37 ° C, and then it begins to drop to 36.5-36.9 ° C. On the eve of ovulation, the thermometer will show marks a couple of tenths of a degree less - 36.4-36.5 ° C. This stage before the release of the egg into the uterine cavity is called the low temperature phase.

The ovulatory stage lasts 1–2 days, which means that the thermometer at this time will be around 36.3–36.5 ° C. After the egg leaves the dominant follicle and enters the cavity of the fallopian tube, and then into the uterus, basal indicators under the influence of the release of progesterone rise sharply - up to 37–37.3 ° C. This jump in BT is the most favorable for conception.

Before the onset of menstruation

In case of successful fertilization, BT indicators will remain elevated until the onset of the expected menstruation and will be 37.1–37.5 ° C. If a woman becomes pregnant, in the third phase of the cycle (luteal), the following data will be recorded on the thermometer:

1. Fertilization day is 36.5–36.7 ° C. Fluctuations in BT are still unnoticeable, only after a week or 10 days, when the embryo reaches the uterine cavity and penetrates into the wall of the genital organ, the thermometer will give readings of 37–37.3 ° C.
2. Implantation of the ovum into the wall of the uterus - the basal temperature decreases by 0.2–0.4 ° C (implantation retraction).
3. 3-5 days after the embryo is inserted into the uterus, the temperature level rises to 37 ° C.
4. The next 7-14 days - the basal marks are 37.2-37.5 ° C, normally they should not fall below.

In the early stages of pregnancy, there is no reliable way to determine it if the delay has not yet begun. Tests reveal fertilization only after the absence of the next menstruation, when the level of hCG in the urine reaches 25-30 mIU / ml.

An increase in basal temperature in the days before the arrival of the expected menstruation and subsequent ones against the background of a delay is a sure sign that conception has occurred.

Reasons for changes in BT

If for several months the BT indicators remained at the same level, and in the last, sharply have changed, this should be reported to the doctor - a symptom may indicate the following pathological processes in organism:

1. Inflammation in the small pelvis - on days when the temperature should normally drop (before and during menstruation), on the contrary, it rises.
2. Lack of progesterone production - when a small amount of the hormone is produced, the BT level decreases compared to normal during the luteal stage (less than 37 ° C).
3. Spontaneous ovulation - an increase in BT, which normally should be observed 1-2 days after ovulation, is noted much earlier or later. Untimely release of the egg into the uterus can be triggered by hormonal disorders or exacerbation of somatic diseases.
4. Re-ovulation is a rare occurrence in which two eggs mature at once during one cycle. BT growth peaks will be observed twice, at the moment each of the gametes enters the uterine cavity (they can leave the follicles simultaneously or with an interval of up to seven days).

If the basal temperature reaches 37 ° C after menstruation and does not drop, or the thermometer reaches 38 ° C, an acute inflammatory process in the small pelvis can be suspected. Adnexitis is an inflammation of the ovaries, manifested by pulling pains in the lower abdomen, radiating to the back, a possible increase in body temperature, and general malaise.

Endometritis is a disease of an infectious nature, in which there is inflammation of the inner uterine layer due to abortion, diagnostic curettage, surgical interventions in the uterine cavity. The general body temperature can rise to 38-38.5 ° C, the basal rates are also high. Endometritis can be recognized by bloody discharge from the genital tract interspersed with mucus and pus, abdominal pain, a sharp deterioration in well-being.

Each of the cyclic phases is characterized by its own changes in basal temperature, by which one can judge whether the woman's reproductive system is fully functioning. In case of identified deviations, especially occurring against the background of suspicious symptoms in any of the stages cycle, you need to contact a gynecologist, undergo an examination and identify the factors that caused violations.