If you have intercourse half a month after the abortion, you need to take birth control pills. Because the physiological recovery period after the abortion is half a month, the majority of the time to resume ovulation in the postoperative half a month to 20 days or so, if you do not take contraceptive measures, half a month after the abortion coitus, there is a possibility of pregnancy, so it is recommended to take emergency contraceptive pills, and in the coitus within 72 hours of the oral, in order to achieve the effect of contraception. In addition, one month after the abortion is not allowed to have sex, have sex, the first, afraid of pregnancy; the second, mainly easy to cause pathogenic bacteria infection and cause pelvic inflammation, or endometrial inflammation, resulting in clinical recurrent pain in the lower abdomen, and serious can lead to infertility.