There is no clear time relationship between pelvic inception and formal labor, and it does not mean that labor will definitely occur within a long time after pelvic inception. In principle, first-time mothers tend to go into pelvic inception 1-2 weeks before delivery, while women in labor tend to go into pelvic inception only after delivery. When the fetal head enters the pelvic inlet, the pregnant woman feels that the bottom of the uterus has dropped slightly, her breathing is lighter and faster than before, she eats more, and she urinates more frequently. There is no correlation between the time of labor and the time of pelvic birth, and pelvic birth does not mean that labor is imminent, so there is no definite answer as to how long it will take for labor to start after pelvic birth. In addition, it is important to pay attention to the presence of bloody discharge and regular abdominal pain after labor. If there is redness or painful contractions after labor, you should go to the obstetrics department in time for delivery. After labor, pregnant women should keep their mood relaxed, pay attention to the breathing rate, and observe the signs of labor.