The first-time mothers usually have regular contractions 1-2 weeks after pelvic birth; most of the menstruating mothers start pelvic birth only after pelvic birth. The majority of first-time mothers will feel a sense of emptiness in the upper abdomen and stomach area, more comfortable than before, eat more, breathe more easily and freely, and often accompanied by frequent urination and lower abdominal cramps and other pressure symptoms. The above symptoms are typical changes that occur after the fetal head is in the pelvis, which is not a single action, but a gradual process in which the fetal head gradually descends and passes through the different maximum diameters of the pelvis with the smallest diameter of the fetal head, if the fetal head is still not in the pelvis after delivery, you should be alert to the possibility of cephalopelvic disproportion or abnormal fetal head position. The first time the fetal head is in the pelvis, the false contractions become more and more frequent, which indicates the aura of labor.