Although we have all heard of the ovulation period, many married women still do not know how to calculate their ovulation period. If they do not know which day their ovulation period is, they cannot do contraception or prepare for pregnancy. For women, this is naturally very troublesome, and there is actually a set of methods for calculating ovulation period. Today, we will provide you with a scientific analysis, hoping that you have some understanding.
For those with a normal menstrual cycle
Female ovulation is influenced by the endocrine hormones of the pituitary gland and ovaries, presenting periodic changes. The duration of both cycles is consistent, with one cycle per month, and ovulation occurs between two menstrual periods. The menstrual cycle of women varies in length, but the interval between ovulation and the start of the next menstrual cycle is relatively fixed, usually around 14 days. So based on the relationship between ovulation and menstruation, the ovulation period can be calculated according to the menstrual cycle. The calculation method is to count from the first day of the next menstrual cycle, and subtract 14 days from the last 14 days to determine the ovulation day. The ovulation day, along with the first 5 days and the last 4 days, is called the ovulation period. This is also the theoretical basis for the safe period contraception method, because in the menstrual cycle, except for the menstrual period and ovulation period, the rest of the time is the safe period.
For example, taking a menstrual cycle of 30 days as an example, if the first day of this menstrual cycle is on September 29th, then the next menstrual cycle will be on October 29th (September 29th plus 30 days). Subtracting 14 days from October 29th, then October 15th is the ovulation day. The ovulation period includes the day of ovulation, as well as the first 5 days and the last 4 days, from October 10th to 19th.
To calculate the ovulation period using this method, the first step is to know the length of the menstrual cycle, which means that there must be a very normal or regular menstrual cycle in order to calculate the start date of the next menstrual cycle and then calculate the ovulation period. Therefore, it can only be applied to women who have always had a normal menstrual cycle. If the menstrual cycle is irregular or abnormal, it is impossible to calculate the date of the next menstrual cycle, so it is also impossible to calculate the ovulation date and ovulation period.
For those with irregular menstruation
The first day of ovulation is equal to the shortest menstrual cycle minus 18 days;
The last day of ovulation=the longest menstrual cycle minus 11 days.
For example, if the shortest menstrual period is 28 days and the longest is 37 days, the shortest regular period needs to be subtracted by 18 (28-18=10) and the longest regular period needs to be subtracted by 11 (37-11=26). Therefore, from the 10th to the 26th day after the menstrual period, it belongs to the ovulation period.
Based on the previous introduction, we should now know how to calculate ovulation period. For young women, if they maintain a frequency of having sex every two days for a few months at the beginning, unless there are special circumstances, they will generally become pregnant. If they do not want to get pregnant, they need to miss these few days for sexual activity.
