When is the ovulation date if the menstruation comes on the 20th?

The ovulation period is 14 days before the next menstrual period, and the normal menstrual cycle is 28-30 days. If your normal menstrual period is every 30 days and your period comes on the 20th, your ovulation period is 14 days before the next menstrual period, which is on the 6th. Due to individual differences, ovulation may sometimes be early or late, especially for women with irregular menstrual cycles. Ovulation is irregular and can be judged by measuring body temperature and observing substances during ovulation. During the ovulation period, there will also be completely transparent leucorrhea with stringy texture, and this is the ovulation period.

What is the ovulation calculation method? For girls with regular menstruation, the ovulation period is generally 14 days before the next menstruation. The ovulation period is calculated by subtracting 14 from the menstrual cycle. For women with menstrual disorders, in order to calculate the ovulation period more accurately, they must cooperate with the ovulation test paper method, ovulation temperature measurement method and secretion observation.

1. Aquino Law

The Aquino method is also called the formula method, which means that the ovulation period is about 14 days forward from the last day of the menstrual cycle (that is, the first day of the next menstrual period). If the day of the next menarche is day N, then the ovulation period this time is day N-14.

2. Ovulation test paper method

The progesterone in women's urine is converted into growth hormone (LH), which will reach a peak value within 24-48 hours before ovulation. The use of ovulation test strips can more accurately detect the highest level of LH. After starting the test, you should perform the test regularly every day. When a color close to the peak value appears, you should test it every 12 hours until the highest LH value is detected.

3. Methods for measuring body temperature during ovulation

Continuously measure the ovulation body temperature accurately for six to twelve months and record it in various aspects. The ovulation body temperature will rise by 0.3-0.5℃ after ovulation. Women who are preparing for pregnancy can buy a digital thermometer, set it below 35 degrees Celsius before going to bed every day, and measure their temperature immediately after waking up every morning (after 6-8 hours of sleep) without doing any exercise.