How long it takes for a woman to menstruate after an abortion is usually closely related to the woman’s own menstrual cycle. Usually women with regular menstrual cycles, i.e., menstrual cycles of about 28 days, without the influence of other factors, will usually have their periods about 28 days after abortion. But due to the irregularity of women’s own menstrual cycle, or the influence of other factors, are the cause of abortion after menstruation can not come on time. 1, surgery-related: after abortion ovarian function has not fully recovered, may cause menstruation after the wrong, can be 1 month after abortion follow up, the doctor will be combined with the patient’s situation to give guiding opinions; 2, previous irregular menstruation: previous irregular menstruation of the girl, abortion after menstruation The time of menstruation depends on her own menstrual cycle, if her previous menstruation is extremely irregular, it is recommended that she consult a doctor to adjust; 3. Incomplete abortion: the residual embryonic tissues continue to stimulate the endometrium, which is prone to complications and infections, resulting in the ovaries can not be normal ovulation, the endometrium can not be normally shed, resulting in delayed menstruation, and the patient may also be accompanied by abdominal cramps, vaginal bleeding, and it is recommended that you consult a doctor in a timely manner; 4. If you don’t use contraception, you may have another pregnancy after the abortion, which will also cause menstruation not to come on time, you can use the pregnancy test paper to detect the pregnancy, if there is a positive result of pregnancy, it is recommended to go to the hospital for further clarification. Avoid alcohol, spicy and cold drinks for 1 month after the abortion, pay attention to warmth and rest, ensure sufficient sleep, and prohibit sexual intercourse. Some women will have a small amount of vaginal bleeding, during the period you need to pay attention to the local cleanliness and hygiene of the vulva, avoid wearing tight clothes and pants, keep the vulva local breathability.