Are pregnant women prone to premature delivery?

Pregnancy refers to the second and third trimester of pregnancy. From the appearance, the lower abdomen is raised and the fetus is positioned lower. If pregnancy occurs before 37 weeks, it means that the fetal head is in the basin and it is likely to be premature. If pregnancy occurs in the second trimester, it may also be related to the skin relaxation of the pregnant woman and the small amount of amniotic fluid. If it is caused by skin relaxation, it generally does not lead to premature birth.