After pregnancy is able to cohabit, but it is best not to cohabit in the first and last trimester, easy to lead to miscarriage or preterm labor. The first trimester that is, before 12 weeks of pregnancy, due to this time belongs to the early stages of pregnancy, the embryo is not stable, the pregnant woman exists in the early pregnancy reaction is more difficult. If you have intercourse during this time, you are prone to abdominal pain, vaginal bleeding and other pre-miscarriages, so you should try not to have intercourse. The last trimester is after 28 weeks of pregnancy, when the pregnant woman has a larger abdomen and has difficulty moving. This time period of intercourse is likely to lead to premature rupture of membranes and premature labor, so this period should not try to different rooms. If you have intercourse, it’s best to do it between 3 and 6 1/2 months of pregnancy, which is a relatively safe period of time. If pregnant women experience abdominal pain and other symptoms during intercourse, it is recommended that they seek medical attention in a timely manner, under the guidance of a doctor, complete the relevant examinations, identify the cause of the disease and treat the symptoms.