The vast majority of women have sex for the first time will lead to hymenal laceration, and then a small amount of bleeding, because the hymen belongs to the mucous membrane tissue, healing ability is very strong, will soon heal, does not affect the subsequent sex life. It is recommended to pay attention to hygiene when having sex, and both men and women should wash their genitals to avoid bacterial infections that can cause inflammation of both genitals. In addition, it is recommended to avoid menstruation when having sex, because if you have sex during menstruation, it is likely to lead to endometriosis, pain in the lower abdomen during menstruation, and in serious cases, infertility. Having sex during menstruation can cause inflammation of the reproductive tract.