Picture of eight and a half months fetus entering the pelvis

If the pelvis has not entered the womb after about eight and a half months, there is no need for special treatment. Just pay attention to regular prenatal checkups as prescribed by your doctor. Generally, primiparas begin to engage in uterine calf engagement 2 to 3 weeks before delivery, while primiparas who have given birth before usually begin to engage in uterine calf engagement after entering the official labor process (regular uterine contractions). Whether the fetus has entered the pelvis can only be determined through pregnancy check-ups. If you experience spotting, lower abdominal pain (the hardened uterus can be touched during pain), or vaginal discharge (placental abruption) after full-term pregnancy, you should go to the obstetrics department of a regular hospital for hospitalization and delivery immediately.

The time when the fetal head enters the pelvis for first-time mothers is around 32 weeks of pregnancy. For some pregnant women, the fetus enters the pelvis about a week before delivery. The time when the fetal head enters the pelvis for first-time mothers is relatively late, and the fetus usually slowly descends around the time of delivery. The fetal head entering the pelvis means that the head and pelvis are equal, and cephalopelvic disproportion is unlikely to occur. However, the actual delivery of pregnant women also depends on whether they can produce spontaneous periodic and gradually increasing uterine contractions, and whether the fetus can descend smoothly with the progress of uterine contractions. Remember to take pregnancy tests on time.

The time when the fetal head enters the pelvis is generally between 34 and 37 weeks of pregnancy. The fetal head enters the pelvis when the biparietal diameter of the fetus in the fetal head position enters the lower part of the pregnant mother's pelvic canal. It is a signal that the fetus is ready to come and is also the first step in the process of normal delivery. At this time, you should pay attention to getting more rest, eating a balanced diet, and regular pregnancy checkups. If you experience spotting, ruptured amniotic fluid, or regular uterine contractions, you need to see a doctor immediately and wait for the pregnant woman to give birth. It is best to determine whether natural delivery is suitable based on your own pelvic conditions, fetal position, etc.

When the biparietal diameter of the fetus in the head position reaches the plane of the pelvic canal, and the lowest value of the skull of the fetus is close to or reaches the level of the ischial spine, that is, the mid-pelvic plane, it is called the fetal head in the pelvis. The head presentation of the fetus in the pelvis is an expression of the cephalopelvic relationship. The head presentation of the fetus in the pelvis may occur at any time after 32 weeks. The head presentation of the fetus in the pelvis does not mean that the pregnant woman will give birth immediately. The head presentation of the fetus in the pelvis is only a step in the delivery process.