Tightening and hardening of the stomach frequently at forty weeks indicates that the pregnancy has reached full term, and is also an important manifestation of contractions, which are an important feature before labor. Contractions are irregular and weak at the beginning, and gradually become regular, stronger and stronger, lasting longer and shorter intervals, so the contractions are not regular and cyclical at the beginning, and you will not feel any pain, and only when you are in preterm labor will there be contractions accompanied by pain, which is also a harbinger of labor, if the patient’s hospital is relatively close, go to the hospital ten minutes before the contraction occurs. If the patient’s hospital is close by, go to the hospital ten minutes before the contraction occurs. If it is far away, it is recommended to wait for the labor in the hospital and get ready to welcome the baby.