Your period, also known as menstruation, may not come until about 30-40 days after an abortion, and the exact time varies from person to person. Abortion surgery damages the lining of a woman’s uterus, and it takes some time to repair and heal slowly after an abortion. Most women may resume menstruation in about 30 days, while some women will delay it and may resume menstruation in about 40 days. Each woman’s physical condition is different, the recovery after abortion is also different, the specific how long will menstruation resume can not be generalized, more than 40 days after the menstruation has not come to the hospital to check the cause. If you resume sex too soon after the abortion and your period is delayed, you may be pregnant again. Mental stress after abortion, long-term weight loss and dieting, staying up all night and other situations cause endocrine disorders, can also cause delayed menstruation. Menstruation may be irregular at the beginning of recovery after abortion, and it takes 2-3 months to adjust slowly.