Just after the menstruation, it is not recommended to have sex for the following two specific reasons. The first aspect is that during the menstrual period the female organism has low immunity, is depressed, and is weak due to blood loss, so it is difficult to achieve orgasm during sex. The second aspect is that when menstruation is just gone, there is still a little brown discharge in the vagina, because blood cells are a good culture medium for bacteria. If you have sex at this time, bacterial upstream infection will cause pelvic and adnexal inflammation, leading to increased pain and discomfort in the lower abdomen of women. Therefore, it is recommended that women have normal sex within 3-7 days after menstruation, which is conducive to the harmony of the sexual life of both men and women. It is recommended that women pay attention to hygiene during menstruation, avoid getting cold, and avoid overexertion.