In the early and late stages of pregnancy, coitus is usually not recommended, but in the middle of pregnancy, coitus may be appropriate if you are in good health.
In the early stages of pregnancy, i.e. within 12 weeks of pregnancy, as the placenta has not yet formed, the pregnancy is not stable, if you have intercourse during this period, the fetus will be easily affected by stimulation, and in serious cases, it will lead to miscarriage. In the late stage of pregnancy, that is, after 28 weeks of pregnancy, coitus may cause infection of the uterine cavity, and it is easy to stimulate the cervix, resulting in uterine contractions, causing preterm labor.
In mid-pregnancy, if the pregnant woman is in good physical condition, there are no uncomfortable symptoms, and the fetus is stable, you can have intercourse appropriately.
If in the process of coitus, the pregnant woman has abdominal pain or vaginal bleeding, must immediately stop, timely to the hospital to check whether there is a pre-eclampsia, placenta previa and so on the occurrence of the situation.