The fetus will usually be born 2-3 weeks after the pelvis has entered the womb, but there is no very exact reference value for the time between the pelvis entering the womb and the delivery.
A primigravida will usually be in labor 2-3 weeks before delivery, and the situation is different for each individual. Some women have a wider pelvis and may be in labor at around 8 months, while a menstruating woman will usually be in labor one week before pregnancy or before delivery. There is no accurate numerical reference for the specific situation. Whether labor is imminent or not is generally determined by the presence or absence of redness, water breakage and regular contractions.
How long it will take for the fetus to be born after it has entered the pelvis should be analyzed comprehensively, and the time of delivery should not be judged purely on the basis of its entry into the pelvis. Regular obstetrical checkups are required after pregnancy. Delayed pelvic insertion cannot be ruled out as pelvic abnormality, which may lead to obstructed labor.
After labor, you need to give a professional assessment to decide the mode of delivery, usually pay attention to observe the fetal movement, and consult a doctor in time if there is any abnormality.