37 weeks pregnant abdomen like menstrual cramps, usually occur for two reasons: one is false contractions, the other is the real contractions, that is, the performance of the aura of labor.1, false contractions: 37 weeks pregnant belongs to the late stage of pregnancy, the closer to the due date, false uterine contractions the more frequent, the main manifestation for the abdomen is tightened hard, sometimes accompanied by a vague pain in the abdomen, like menstrual cramps. False contractions are physiological phenomena, generally do not need special treatment, you can go to the hospital for pregnancy checkups, to observe the changes in fetal movement, but also through the change of position and rest to regulate; 2, true contractions: that is, the contractions of labor, belonging to the manifestation of the aura of impending labor, although 37 weeks is not yet the due date, but it has already belonged to the full term of pregnancy, the emergence of abdominal tightness, hardness of the sensation, accompanied by abdominal pain, the initial stage of the may like Faint menstrual cramps, but with the passage of time, it will become more and more painful, more and more regular, pregnant women should go to the hospital in a timely manner, gynecological internal examination, fetal heartbeat monitoring and so on. 37 weeks of pregnancy the fetus is full term, any one of these time periods may be labor initiation, need to make preparations related to hospitalization for delivery. In addition, the second half of pregnancy must pay attention to the baby’s fetal movement, it is an important sign of reaction to whether the fetus lack of oxygen.