The last day of menstruation for women, the bleeding has not completely stopped, the specific hazards are as follows: 1, abnormal menstruation: stimulation of sexual life can cause an increase in bleeding, prolonged bleeding, that is, cause changes in the menstrual cycle and menstrual bleeding. 2, vaginal inflammation: because the abnormal effects of bleeding have not completely stopped, the local resistance of the vagina is relatively low, after sex can cause an increase in the probability of infection, leading to vaginal inflammation. 2. endometriosis: the bleeding is not completely clean and the stimulation of sexual intercourse may cause blood to flow back into the abdominal cavity, increasing the probability of endometriosis, which is the occurrence of dysmenorrhea. The above situations are the hazards of having sex without a completely clean period.