If you have a vague pain in your stomach at 37 weeks of pregnancy, it is better to go to the hospital for fetal heart monitoring to see how the contractions are. If there are contractions every 5-10 minutes, one contraction lasts about 30 seconds. It is best to ask your obstetrician to do a vaginal examination to see if the cervical canal has shortened and the opening of the uterus has not opened. If there is a shortening of the cervical canal, the opening of the uterus and contractions, it is considered to be a sign of preterm labor and the need for hospitalization for labor should be considered. If there is no contraction during monitoring, the ultrasound is normal, and there is vague pain in the stomach. The first thing to do is to rule out the possibility of digestive system diseases, such as gastroenteritis, if this is the case, you should go to the gastroenterology department.