Lying on the side will not usually press on the fetus. Pregnant women in the early stages of pregnancy the fetus is not yet fully formed, this time lying on the side or lying flat is fine, there is no special requirements. As the pregnant woman’s pregnancy weeks increase, the fetus will further increase in size, to the middle and late pregnancy, the pregnant woman’s stomach will also gradually increase. At this time, it is generally recommended that pregnant women choose to lie on the left side, which can reduce the pressure on the heart and increase the blood supply to the heart. The fetus is protected by amniotic fluid in the abdomen, so the left side lying position generally will not compress the fetus. It is recommended that pregnant women maintain a happy mood during pregnancy, do not do strenuous exercise, to provide a good environment for pregnant women and the fetus, pregnant women should pay attention not to overwork, pay attention to rest.