What are the absolute safe periods for women?

The absolutely safe period refers to the 1st to 7th day of the menstrual cycle and the last 4-5 days of the cycle. During this period, ovulation has not occurred or the egg has died, so even if the ovulation date changes, it is still an absolutely safe day. From the perspective of contraception, they divide a menstrual cycle into three periods: the absolutely safe period, the safe period and the dangerous period.

Assuming a menstrual cycle (from the first day of menstruation to the first day of the next menstruation) is 28 days, ovulation occurs around the 14th day. The 3-5 days before and after ovulation are the fertile period, which is a dangerous period for contraception. Days 1-7 and the last 4-5 days of the cycle are when ovulation has not occurred or the egg has died, which is an absolutely safe period. The remaining days are relatively safe periods, because ovulation may be advanced or postponed a few days due to many factors, so it is called relatively safe.

If you have sex during the absolutely safe period, it is almost impossible to get pregnant, unless there are extremely special circumstances where there are 2 or more ovulations in one cycle; if you have sex during the relatively safe period, the chance of contraceptive failure is greater. Many people think that safe period contraception will not affect sexual pleasure and is very convenient, so many young women are keen to use this contraception, and many women who have just given birth also rely on calculating the safe period to prevent pregnancy.

From a theoretical point of view, based on the female ovulation period and the survival time of sperm and eggs in the female reproductive tract, calculating a period of time when no conception will occur and then conducting AA can indeed achieve the purpose of contraception. Generally speaking, except for the ovulation period, the rest of the menstrual cycle is called the safe period. However, women's ovulation will be affected by many factors such as the external environment, climate, personal emotions, and health status, and may be advanced or delayed by a few days. Therefore, the safe period is divided into absolute period and relative period.

The interval between a woman's ovulation day and the start of the next menstruation is relatively fixed, usually around 14 days. According to this relationship, generally starting from the first day of the next menstrual period, 14 days ago is the ovulation day. The ovulation day and the 5 days before and 4 days after it are called the ovulation period. The days other than this are relatively safe periods.

The absolutely safe period refers to the 3 days before and after menstruation (assuming it is 3 days), and the closer to menstruation, the safer it is. Normal women of childbearing age have menstruation every month. The period from the beginning of this menstruation to the first day of the next menstruation is called a menstrual cycle. Ovulation usually occurs about 14 days before the next menstrual period. The released egg can survive for about 24 hours. If fertilization cannot be completed, it will then degenerate and be absorbed by the human body.

After sperm enters the female reproductive tract, it can maintain its fertilizing ability for 1-3 days. Therefore, a woman is more likely to become pregnant if she has sex with a man from 3 days before to 1 day after ovulation. If either the sperm or the egg has lost its ability to fertilize when they meet, conception will not occur.

Medically, the 5 days before and 4 days after ovulation, together with the 10 days including the ovulation day, are classified as the female ovulation and pregnancy period. The safe period method refers to a contraceptive method that involves having sex during the non-ovulation period to avoid the risk of unplanned pregnancy. The key to this method is to accurately determine the ovulation day.