The vague pain in the abdomen in late pregnancy with a feeling of stool may be caused by uterine enlargement and compression, pseudo uterine contraction, and the fetal head entering the pelvis when labor is approaching. 1. Uterine enlargement and compression: with the development of the fetus in late pregnancy, the uterus will gradually increase in size, resulting in round ligament pulling, there will be a vague pain in the abdomen, the increasing uterus compression of the rectum, accompanied by the sensation of defecation, which is a physiological phenomenon, do not have to be specially treated. 2. False uterine contractions: false uterine contractions are irregular in time, the degree of strong and weak, late pregnancy abdomen by external stimuli or internal factors, such as strenuous exercise, frequent intrauterine activities of the fetus, false uterine contractions, some pregnant women may show a vague pain in the abdomen with the feeling of bowel movement. 3. Fetal head into the basin: late pregnancy when labor is approaching due to the head of the fetus down, there will be regular contractions, the mouth of the uterus will open, the beginning of the contractions may have the symptom of vague pain in the abdomen, the fetal head pressure rectum will have the feeling of bowel movement. There are many reasons why you may have a feeling of bowel movement in late pregnancy, and you should go to the hospital for an examination to determine the cause.