Stomach pain, the mouth of the uterus does not open is considered to be irregular contractions, did not formally enter the labor process, irregular contractions appear more at night, contractions will disappear during the day. Irregular contractions due to the contraction intensity is weak, the duration of the contraction is shorter, in the contraction will not cause the cervical canal to shorten and the mouth of the uterus to dilate, it is recommended that pregnant women to relax, listen to music, increase rest, sleep, if the spirit of the more anxious, you can intramuscular injection of diazepam and other sedative treatment. Regular contractions may occur after sleep, pregnant women in late pregnancy to overcome the fear of labor pains, to adjust the state of mind, regular sleep, diet, conducive to enter the labor process.