The condition of edema of the feet in late pregnancy does not mean that labor is imminent. Generally women may experience edema of the calves and feet in the late stages of pregnancy. The main reason for this phenomenon is that the enlarged uterus presses on the inferior vena cava, resulting in impaired vena cava reflux, so that edema of the calves and feet may occur. It may also be due to the development of gestational hypertension and prompt medical attention is recommended. In the late stages of pregnancy, if the following symptoms occur, it may be that labor is imminent: 1. Irregular contractions. Before delivery, due to the increased sensitivity of the myometrium, irregular uterine contractions will occur, characterized by an inconsistent frequency of contractions, a relatively short duration, and a relatively small intensity of contractions, which will not cause the cervical canal to shorten and the mouth of the uterus to dilate, and they usually occur at night and disappear during the day. 2. Fetal descent sensation. Late pregnancy due to the decline of the fetal preluteal part, the fetus into the pelvis so that the bottom of the uterus is lowered, the pressure on the thoracic organs disappears, the pregnant woman will be conscious of the epigastric region is more comfortable than before, and there is a sense of obvious relief. However, the descending nuchal translucency may press on the bladder, resulting in frequent urination. 3. Seeing red. Generally in the 24-48 hours before the start of labor, there may be a small amount of vaginal bleeding, commonly known as redness, this is due to the separation of the fetal membranes near the internal os of the cervix and the uterine wall in that area, capillary rupture and bleeding, is a sign of the imminent start of labor.