At 38 weeks of pregnancy, the presence of a hard and tight stomach indicates that contractions have occurred. In late pregnancy, physiological contractions will become more frequent. These contractions may promote the maturation of the cervix and may also be a precursor to labor. If the hardness of the stomach can reach more than 2 times in 10 minutes, it means that labor is approaching. In this case, the pregnant woman should first go to the hospital for a checkup, which requires a fetal heart monitoring to know if the baby is hypoxic, and an ultrasound to know the development of the fetus in the uterus. In addition, a vaginal examination should be done to find out if the opening of the uterus is wide and if the cervical cervix is well matured. For pregnant women who have confirmed signs of labor, it is recommended that they be hospitalized for delivery.