Female ovulation is influenced by the endocrine hormones of the pituitary and ovaries and shows cyclic changes. The length of both cycles is the same, 1 cycle per month, and ovulation occurs in the middle of two menstrual periods. Since everyone’s menstrual cycle is different, the answer to the question of how many days after menstruation is ovulation will be different. However, you can calculate ovulation according to the following formula 1. For women with stable and normal menstrual cycle: Generally, it is the 14th day before the next menstrual period, then the 5 days before this day, including this day and the 4 days after this day, is called ovulation, that is, the general ovulation period for women is 10 days. For example, if you take a 30-day menstrual cycle as an example, and the first day of your current period is June 25, then the next period will be on July 25, the day of ovulation will be 14 days before July 25, which is July 11. The first 5 days of the ovulation day are July 6 and the last 4 days are July 15, so the ovulation period is from July 6 to July 15. How many days after menstruation is ovulation? Just subtract the date of your current period from July 6. For example, if the current period comes on June 25 and ends on June 30, then 6 days after the period is the ovulation period. 2. For women with unstable or abnormal menstrual cycles: ovulation can be calculated by this method: the first day of ovulation = the shortest menstrual cycle days minus 18 days; the last day of ovulation = the longest menstrual cycle days minus 11 days. This is calculated by taking the first day of the current menstrual cycle as the base point and counting backwards in days. For example, if the shortest menstrual period is 28 days and the longest is 37 days, the shortest regular period should be subtracted from 18 (28-18=10) and the longest regular period from 11 (37-11=26), so days 10 to 26 after the menstrual period belong to the ovulation period. The method of ovulation test: 1. Basal body temperature test method The daily basal body temperature test is used to deduce when ovulation is. Basal body temperature is the body temperature measured every morning when you wake up without any exercise. In normal women, the basal body temperature changes periodically during the menstrual cycle. Generally, ovulation occurs before the rise of the basal body temperature or during the rise from low to high, and the rise of the basal temperature after ovulation suggests that ovulation has occurred, and the increase in body temperature is generally 0.3℃ to 0.5℃. According to this principle, you can have a good grasp of the ovulation period of women. 2.Ovulation test Paper test The hormone level of human body can be tested by special ovulation test paper to determine whether a woman is ovulating or not. Generally, you can start monitoring from the tenth day of menstruation and keep measuring until ovulation. In the process of testing for several consecutive days, try to use the urine sample at the same time every day. Through the test paper results show that if two colored bands appear and the detection line is equal to or darker than the control line of the visible color, it indicates that there has been a peak of LH, indicating that ovulation will take place within 24-48 hours. 3.White belt observation method When women ovulate, there will be obvious changes in the cervical mucus, the white belt can be stretched and the number becomes more, so it can also be very convenient to test the ovulation period of women. 4.Calendar method This method is suitable for couples with regular menstrual cycle, regular life, long-term cohabitation, and both parties can cooperate and understand each other. Women who meet the above conditions usually ovulate about 14 days before their menstrual period.