In the eighth month of pregnancy, pain in the stomach like menstrual cramps may be caused by preterm labor, contractions or other diseases, etc. You should seek medical attention in time to clarify the cause. 1. Pseudo contractions: usually accompanied by a feeling of hardness and tightness in the stomach, usually appear less frequently, the pain intensity is not great and lasts for a short time. Generally, no special treatment is needed, but pregnant women should take proper rest and pay attention to monitoring fetal movement. 2.Placental abruption: if the pain lasts longer and is accompanied by vaginal bleeding, it may be caused by placental abruption, and conservative treatment, transvaginal trial of labor or cesarean section can be chosen according to the condition of the pregnant woman. 3.Premature labor: if the pain is regular for 10 minutes, the possibility of preterm labor should be considered, and it is necessary to go to If it is preterm labor, you need to go to the hospital for relevant examination. If it is preterm labor, the pregnant woman should actively carry out the treatment to calm the fetus, rest in bed, reduce the activity, try to choose the left side of the bed to improve the fetal blood supply, if necessary, under the guidance of professional doctors, the use of magnesium sulfate and other drugs to inhibit contractions, while giving glucocorticoids to promote fetal lung maturation, and from time to time to review the ultrasound to observe the changes in the condition; 4, other causes: appendicitis, intestinal cramps, urinary stones and other diseases may It can also cause abdominal pain in pregnant women, so they need to go to the hospital for diagnosis in time to exclude the possibility of other diseases.