How to calculate ovulation period?

During the ovulation period, women must choose simple foods in their diet. Eating complex foods at this time will not do any good to the body, but will cause a variety of problems. Women's physical constitution is relatively poor during the ovulation period, and there are many changes in the body. Women should pay attention to these. So how to calculate the ovulation period? This is also something that many women don't understand very well. Let's introduce it in detail below.

How to calculate ovulation period:

Ovulation calculation method 1: estimation method

Usually, women ovulate about 2 weeks (12-16 days) before their next menstrual period. Therefore, you can calculate it yourself based on the rules of your previous menstrual cycle. However, the ovulation period may change due to the influence of environment, disease, mood and medication, so the calculation of ovulation date should be based on actual conditions.

Ovulation calculation method 2: menstrual date calculation method

It is believed that each ovulation should occur about 14 days before menstruation, so the 5 days before ovulation to the 5 days after ovulation are called "ovulation day". However, this method is less reliable because most women have irregular periods. In comparison, the first two methods are more reliable, but somewhat troublesome. Here we introduce you to a simple and more reliable calculation method, hoping it will be helpful to you. The calculation formula is:

The first day of ovulation = the number of days in the shortest menstrual cycle minus 18 days

The last day of ovulation = the longest menstrual cycle minus 11 days

Before using this formula for calculation, the individual is required to observe and record his or her menstrual cycle for 8 consecutive times to obtain the longest and shortest number of days in his or her menstrual cycle. The numbers obtained by substituting them into the above formula represent the beginning and end time of the woman's "ovulation period" respectively.

(The menstrual cycle is calculated from the first day of the current menstrual period to the first day of the next menstrual period) For example, the longest menstrual cycle of a woman of childbearing age in the first 8 months is 30 days and the shortest is 28 days. Substituting the formula into the formula is:

Ovulation day 1 = 28 days - 18 days = 10 days

The last day of ovulation = 30 days - 11 days = 19 days

That is: this woman's "ovulation period" starts on the 10th day of this menstruation and ends on the 19th day of this menstruation.

If you observe that your menstruation is very regular: once every 28 days, then you can set the longest and shortest days of your menstrual cycle to 28 days. Substituting them into the formula, you can calculate your "ovulation period" as: day 10-17 of this menstrual period.

This calculation method takes the first day of the current menstruation as the base point and counts the days forward, rather than taking the next menstruation as the base point and counting backwards, so it is not easy to make mistakes. After finding out the "ovulation period", if you want to get pregnant, you can start from the first day of the "ovulation period" and have sexual intercourse every other day for several months, and you are very likely to get pregnant. If you don’t want to get pregnant, you have to miss the “ovulation period” to have sex.

Method 3 for calculating ovulation period: Ultrasound examination

Currently, major hospitals in China use vaginal B-ultrasound to observe the size of the ovaries, measure the size of follicles, and estimate when ovulation occurs. The follicle is generally about 2-3 mm in size. It will gradually increase in size as ovulation approaches, reaching 18 mm 2 days before ovulation and increasing to over 20 mm on the day of ovulation. If the observation day happens to be the ovulation day, sometimes you can even see the rupture of the follicle on ultrasound.

It can be seen from this that using vaginal B-ultrasound to detect ovulation is the most direct and accurate method. First, you can use the menstrual cycle method to predict an approximate ovulation date, perform follicle measurement on a day close to the ovulation day, observe the size of the follicles, and seek guidance from a doctor.

If the follicle has just been formed or is still very small, an ultrasound examination can be performed every two days to monitor the growth rate of the follicle. When the follicle is close to maturity and is about 16 mm in size, it can be tested every day, or even twice a day, until the follicle matures.

After the follicle ruptures and releases the egg, ultrasound can detect a small amount of accumulation in the pelvic cavity, confirming that ovulation was successful. If you can use the basal body temperature chart, secretion viscosity test and mid-term pain method, you can basically determine the ovulation day very accurately, which will greatly increase your chances of pregnancy.

After understanding how to calculate the ovulation period, you will know when you ovulate. At this time, women should pay attention. If your body temperature is too high, do not choose medication. You can choose some physical methods to relieve it. This will not affect your body. Moreover, if you do not use contraception during the ovulation period, it is very easy to get pregnant.