Women are not allowed to take pills after sex for the following reasons: first, because during sex, as semen enters a woman’s vagina, it will be discharged within a few hours with the leucorrhea, which will not cause inflammatory infections in the vagina, only need to pay attention to keep the vulva clean and hygienic before and after sex, to avoid damage to the vaginal wall caused by too frequent sex. Secondly, if the pills are used because of vaginal inflammation or cervical inflammation, women should not have sex while they are taking the pills to treat the disease. If the pills are inserted after sexual intercourse, the effect of treatment will not be achieved and the vaginal bacterial infection will be prolonged, which will affect the healing of the disease.