Is the week before menstruation a safe period?

In general circumstances, "yima" refers to menstruation. Whether the week before menstruation is considered a safe period needs to be determined based on individual circumstances. If the menstrual cycle is regular and stable, the week before menstruation may fall into a relatively safe period. However, if the menstrual cycle is irregular, it becomes difficult to determine the safe period. Detailed explanations are as follows:

If a woman has a regular menstrual cycle, the week before her period typically falls within the luteal phase. During this phase, ovulation has already occurred and the corpus luteum gradually degenerates in preparation for the next menstrual cycle. Therefore, during this time, since no new eggs are released, the chance of pregnancy is theoretically relatively low, making it a relatively safe period.

For women with irregular menstrual cycles, it is difficult to accurately estimate the date of ovulation. The ovulation process can be influenced by various factors such as emotional changes, environmental changes, stress, and illness, causing it to occur earlier or later than expected. For example, some women might experience delayed ovulation due to work-related stress. While calculations based on a normal cycle would suggest no ovulation occurs during the week before menstruation, ovulation may actually occur. In such cases, the week before menstruation is not a safe period, and sexual intercourse could result in pregnancy.

The safe period method of contraception is not reliable. It is recommended that women use effective contraceptive measures during sexual activity, such as using condoms, taking oral contraceptives, or inserting an intrauterine device (IUD).