You should not have children until at least three months after an abortion. The body and the uterine lining of the uterus need some time to recuperate after an abortion, and it is important to take contraceptive measures for three months after an abortion to avoid unwanted pregnancies. Three months after the abortion, you should have a health checkup, an ultrasound to check the recovery of the uterus, and a eugenics test. In addition, the male partner should also undergo a health check and even a routine semen test. If there is no abnormality in the examination, the woman should take oral folic acid three months in advance to prevent the occurrence of fetal neural tube malformation, and then she can prepare for pregnancy.