When you have intercourse in the seventh month of pregnancy, when the uterus is enlarged and the belly is bulging more obviously, if you exert too much force or are too reckless, you may cause the uterus to contract and trigger the chances of preterm delivery. It is also possible to have premature placental contractions during this period because the cervical canal becomes shorter and the opening of the cervix is slightly dilated at this time. So in the seventh month of pregnancy, it is best not to have intercourse, but also need to pay attention to rest, do not overwork, do not have too much exercise, to avoid causing premature delivery of the fetus. You should also pay attention to hygiene and washing, because during this period the secretion increases, and if you do not pay attention to hygiene, it will easily lead to uterine infection.