What is ovulation day?

Under normal menstrual conditions, the female ovulation period is from the first day of menstruation, to the 14th day for ovulation, ovulation day of the first five days and four days after the addition of ovulation period. Ovulation is mainly the secondary oocyte, or egg cell. The secondary oocyte enters the fallopian tube and carries out second meiosis in the fallopian tube. This division should be carried out after fertilization, after the sperm nucleus enters the secondary oocyte. The result of division is an effective large cell, the egg cell, and an unfertilized polar body.

If the oocyte discharged this month is not fertilized, the corpus luteum in the ovary will degenerate, the production of estrogen and progesterone will be reduced, the endometrium can not be supported by estrogen and progesterone, atrophy, collapse, vasospasm in the endometrium contraction, and finally rupture bleeding, the endometrium from the uterine cavity peeling off, through the vagina Expelled, this is menstruation.

Normal women of childbearing age have menstruation once a month, from the beginning of this menstrual cycle to the first day of the next menstrual cycle, called a menstrual cycle. Considering contraception, a woman’s menstrual cycle can be divided into menstrual period, ovulation period and safety period. The ovulation day of a woman is generally about 14 days before the next menstrual onset. The first 5 days and the last 4 days of the ovulation day, together with the ovulation day, are called ovulation period.

Symptoms of ovulation

1. Basal body temperature drops. When the ovulation day arrives, the body temperature of the woman drops suddenly on the day of ovulation, soars on the second day, and then continues for a high temperature period. The basal body temperature of women can be seen clearly on the day of ovulation.

2, cervical mucus secretion increased. In the first half of the menstrual cycle, the cervix does not secrete mucus, and the vulva is also very dry. After that, the cervix secretes a small amount of sticky and opaque mucus. Before ovulation, with the emergence of estrogen, luteinizing hormone secretion reached a peak, cervical mucus became thin, transparent, clear, and increased. The symptoms of ovulation are more obvious at this point.

3, ovulatory pain. Women in the ovulation day, lower abdomen will have some pain, this relative to the crowd, some women are not aware of ovulation pain, but some women ovulation pain is very obvious, when ovulation, abdominal pain will be more obvious, very easy to detect. Women can deduce from the actual situation.

Calculation of ovulation day

Women can calculate their ovulation date by the following methods:

1, cervical mucus method: women can use their fingers or toilet paper to check their cervical mucus. If not ovulation, women’s cervical mucus is usually not bright nor sticky. A few days before ovulation, cervical mucus begins to change, becoming clearer, slippery and egg-white-like. Women can judge whether they are on the day of ovulation by observing the change of cervical mucus.

In addition, women can also go to the hospital for cervical mucus check to determine whether ovulation. The cervical mucus is dried and observed under microscope. It can be seen like a fern like crystal. The closer to the day of ovulation, the bigger and clearer the crystalline image.

2. Saliva test: estrogen in female saliva and cervical mucus changes synchronously, so ovulation tester can detect estrogen in saliva to accurately judge the ovulation day.

3. Urinary measurement: under the guidance of the doctor under the B-ultrasound monitoring follicles, when follicles up to 1.8 cm or so, luteinizing hormone measurement, every 2-4 hours, a drop in the peak can be considered to form a peak, ovulation within 12-24 hours after the peak appears. If it is inconvenient to monitor follicles, combined with previous menstrual cycles, luteinizing hormone can be measured two days before the expected ovulation, the interval between the start of a larger, when luteinizing hormone value significantly increased, can be monitored at intervals of 2-4 hours.

4. Basic body temperature method: Basic body temperature refers to the body temperature when a person wakes up in the morning, the body remains quiet, and the mood is also in a state of calm. In the menstrual cycle, the basal body temperature varies periodically. After menstruation and follicular phase, the basal body temperature is low. After ovulation, the ovarian corpus luteum is formed. The progesterone produced acts on the hypothalamic thermoregulation center, causing the body temperature to rise by 0.3-0.5, until 1-2 days before menstruation or the first day of menstruation, and the body temperature drops to the original level. Women can record their basal body temperature every day, indicating that ovulation day is approaching when the body temperature begins to change.

5. Ovulation day pain: Some people in the middle of two menstrual periods, exactly equal to the time before ovulation, lower abdominal pain feeling, known as intermediate pain or ovulation pain. According to statistics, about 15% of women will feel pain before ovulation, so if the time coincides, you can think that ovulation will occur within 24 hours.