What is the relatively safe period?

Apr 27, 2025 Source: Cainiu Health
Dr. Zhang Lu
Introduction
The relatively safe period refers to the time frame within a woman's menstrual cycle when the probability of conception is relatively low. The relatively safe period includes the days outside the 5 days before ovulation and the 4 days after ovulation. If a woman has a regular menstrual cycle, ovulation usually occurs around 14 days before the next menstrual period begins. Therefore, the period around ovulation, including the 5 days before and the 4 days after, is considered the high-risk period for conception.

Generally speaking, the relatively safe period refers to the time frame within a woman's menstrual cycle when the probability of conception is relatively low. The detailed analysis is as follows:

The relatively safe period usually refers to the time outside the 5 days before and 4 days after ovulation. If a woman's menstrual cycle is regular, ovulation typically occurs about 14 days before the next menstrual period. Therefore, the period around ovulation is considered a high probability period for conception, known as the fertile window. The time outside the fertile window and menstrual period is considered the relatively safe period. However, the relatively safe period is not absolutely safe, as a woman's ovulation time may be influenced by multiple factors, such as emotions, environment, illness, and medications, which can lead to inaccuracies in calculating the safe period.

In daily life, even during the relatively safe period, contraceptive measures such as condoms or intrauterine devices (IUDs) should be used to ensure effective contraception.