How long to have intercourse in pregnancy should be decided according to the individual’s pregnancy, there is no any abnormality during pregnancy, the stage of 3~7 months of pregnancy can be appropriate to have intercourse, there are abnormalities in the early 3 months of pregnancy, such as preeclampsia, vaginitis, the whole stage of pregnancy is not recommended to have intercourse. The early 3 months of pregnancy and the late 3 months of pregnancy is contraindicated, coitus may increase the chances of fetal miscarriage, preterm labor, placental abruption, intrauterine inflammation and infection, the stage of 3~7 months of pregnancy can consider coitus, but not suitable for all pregnant women, according to their own pregnancy to determine whether they can be able to coitus with men. The first three months of pregnancy without any abnormalities, 3 ~ 7 months of pregnancy stage can be appropriate arrangements for coitus, the frequency of coitus can not be too much, can not be too strong, posture can not be too complicated, coitus process discomfort should be interrupted in a timely manner. The third trimester of pregnancy with preeclampsia, placenta hypoplasia, vaginal inflammation, gestational hypertension and other serious comorbidities, into the third to seventh month of pregnancy stage can not be coitus, so as not to aggravate the discomfort of the original disease after coitus, the pregnant woman’s physical health and the development of the fetus will have an impact. During pregnancy, women should try to control themselves, learn to divert their attention when their sexual desire increases, and try to minimize coitus. During pregnancy, you should follow the doctor’s advice to take a maternity test on time, and if you feel unwell, you must go to the hospital in time, and follow the doctor’s advice to deal with the treatment.