Women can have intercourse 2 to 3 days after their periods end, which is more conducive to female reproductive health. The majority of couples can stop having sex during menstruation. Most people also understand that intercourse during menstruation has a great impact on women’s health, causing infections in mild cases, and in serious cases may lead to endometriosis and infertility. But for the time after the period of intercourse is often not very careful, so often in the end of the period immediately after intercourse. It is not known that the endometrium is not fully repaired after menstruation, so hasty intercourse can easily cause congestion in the uterine cavity, resulting in rebleeding of the endometrium. Many women have prolonged periods, brown menstrual color and menstruation just stopped on intercourse is closely related. Menstruation is a normal physiological phenomenon that is unique to women. When menstruation occurs, the endometrium is shed and a large amount of trauma bleeds in the uterine cavity, and a new endometrium will soon grow at the trauma. Generally speaking, women have menstrual periods for about 3 to 7 days each time, with not much blood on the first day, the most blood on the second to third day, and then gradually decreasing. When menstruation has just stopped, there are still broken blood vessels and glandular ducts on the surface of the uterine cavity, and there is still blood leakage from the tiny blood vessels, and the new endometrium has just started to grow, and the surface is not yet covered by epithelium. At this time, the trauma in the uterine cavity is just like the skin of an epidermal abrasion, although it is no longer bleeding, it is still not fully regenerated and repaired. Therefore, do not have intercourse immediately after the period, this practice is detrimental to female reproductive health, it is recommended that it is best to have intercourse 2 to 3 days after the clean menstruation is most appropriate.