If the uterus is more than three fingers open, you can go into the delivery room, which varies from one midwifery institution to another. Regular contractions in the second trimester of pregnancy indicate that you are about to enter the labor process, and in general you need to enter the delivery room to wait for labor until the uterus is fully open ten fingers or ten centimeters into the second stage of labor, and you need to be on the delivery bed to prepare for the delivery of the baby. The birth of a child needs to be open ten fingers, that is, the mouth of the uterus opened ten centimeters, the fetus can be delivered from the birth canal, if the mouth of the uterus opened to a certain degree of the fetus does not move downward, it can not be delivered, is known as stagnation of labor, the need to transfer to the cesarean section. You need to wait patiently for the first few uterine openings, pay attention to the changes in fetal movement, and inhale deeply when you feel the urge to go to the toilet, and avoid squeezing the abdomen in advance.