A contraction that lasts 7 minutes in the middle of the night and then disappears in the morning is considered to be an irregular contraction, which is a normal physiological phenomenon in the late stage of pregnancy, and there is no need to worry about it. Some women experience symptoms of impending labor in late pregnancy, especially before delivery, such as regular contractions, a feeling of the fetus descending, and a small amount of vaginal bleeding. Contractions that occur once every 7 minutes in the middle of the night but are no longer regular in the morning are called irregular contractions. This occurs because the increased sensitivity of the uterine muscle layer causes irregular contractions before a woman goes into labor. The contractions are characterized by inconsistent frequency, short duration and long intervals, no gradual increase in intensity, and mostly appear at night and disappear during the day. When irregular contractions occur in late pregnancy, there is no need to be overly nervous, and you should count the fetal movements at this time. If fetal movement is normal and there is no vaginal bleeding or fluid, you can continue to observe. However, if the contraction time is gradually prolonged, and more regular contractions appear, and the interval between contractions will be shorter, it is considered that labor is approaching, and you need to go to the hospital to wait for delivery.