A normal and harmonious sex life is a normal need, and pregnancy is a special period, so can we have intercourse in early pregnancy? Will intercourse lead to fetal malformation? The same room during pregnancy will not lead to fetal malformation, but during pregnancy sex should be careful to avoid too intense, and pay attention to sexual hygiene and the correct use of condoms. But because the fetus is not firm in early pregnancy, sex may cause miscarriage, so sex should be avoided in early pregnancy. In the middle of pregnancy, as long as everything is normal during pregnancy, sex will not hurt the baby in the womb, the cervical mucus plug increased during pregnancy, these mucus plug can resist bacteria into the uterine cavity, and the amniotic sac and the strong muscle layer of the uterus can also protect the little baby in the womb. Sex can also be appropriate in late pregnancy, when too much sex may cause contractions in the uterus and lead to premature birth and other negative outcomes. What factors can cause fetal malformation? The causes of fetal malformation can be divided into genetic factors and maternal or environmental factors. Since early pregnancy is an important period for embryonic cell division and tissue and organ formation, such as exposure to radiation, chemical agents such as drugs during this period can have a chance to cause fetal malformation. If a pregnant woman is infected with microorganisms during pregnancy, such as rubella virus, cytomegalovirus or herpes simplex virus, it may also cause fetal malformation. How to prevent congenital malformation? 1.Avoid cold and fever, such as just runny and other wind chills, minimize the use of drugs. 2.Avoid approaching cats and dogs, especially stray cats and dogs. 3.Avoid excessive alcohol consumption. 4.Avoid mental tension, too much tension may affect the development of embryonic tissues, which in turn may cause fetal malformation. 5.Lastly do not wear makeup during pregnancy, some studies have shown that the rate of giving birth to malformed babies with large exposure to cosmetics is The rate of normal pregnant women is 1.25 times higher.