There is no need for contraception during pregnancy, but it is important to pay attention to the timing and hygiene of intercourse, and not to have intercourse in the early or late stages of pregnancy.
The most obvious and initial symptom of pregnancy is the cessation of menstruation, so if your period is delayed for more than 7 days, you should first consider whether you are pregnant. Once you are pregnant, you will stop menstruating and ovulating, so if you are pregnant, you will not be able to get pregnant again, so there is no need for contraception during pregnancy.
However, you need to pay attention to the time of coitus during pregnancy, in early pregnancy and late pregnancy is not allowed to coitus, to avoid miscarriage or premature birth. In the middle of pregnancy can be appropriate coitus, during this period the fetus is basically stable, appropriate coitus generally will not affect the development of the fetus. But need to pay attention to good personal hygiene and cleanliness, to avoid excessive force and pressure on the abdomen.
If you experience discomfort after intercourse during pregnancy, please consult the hospital in time to avoid adverse consequences.