What is the time for the fetus to enter the pelvis? What changes will occur when the fetus enters the pelvis?

We all know that after a certain stage of pregnancy, the belly will get bigger and bigger, the fetus will gradually develop completely, and it will start to enter the pelvis and enter the delivery stage. The time when the fetus enters the pelvis may be early or late. Some fetuses enter the pelvis earlier, and some fetuses enter the pelvis later. So how many weeks does the fetus enter the pelvis? Let's take a closer look!

The fetus enters the pelvis at 30 weeks

In most cases, for primiparas, the fetus will enter the pelvis at 36-39 weeks of pregnancy. If it is a multipara, the fetus will often enter the pelvis after the signs of labor appear. That is to say, the baby may have contractions, spotting, and irregular abdominal pains, and then the baby will "slowly" enter the pelvis. The baby may be born 1-2 days or a few hours after entering the pelvis. What's more, the baby may enter the pelvis while being born.

The fetus enters the pelvis in the late pregnancy, but there is no specific time. The fetus may enter the pelvis early or late, and the time when the fetus enters the pelvis varies according to the situation of different pregnant mothers. Generally speaking, the fetus enters the pelvis earlier for mothers who are pregnant for the first time, around 36 weeks of pregnancy. Some mothers who are pregnant for the first time will have the fetus enter the pelvis after delivery. For multiparous mothers, the fetus usually enters the pelvis before or after delivery, which will be later than the first pregnancy.

The entry of the baby into the pelvis is a sign of labor. There is actually no fixed time limit from the entry of the baby's head into the pelvis to delivery. How long it will take to give birth after the baby enters the pelvis is the same as the time when the baby enters the pelvis. It varies from person to person. In other words, the entry of the baby's head into the pelvis does not indicate how long it will take to give birth. However, if the baby has entered the pelvis, then delivery is not far away.

What does it feel like when the fetus enters the pelvis?

No special feeling

After the fetus enters the pelvis, the mother may feel that her belly is moving down. Medically speaking, this is a decrease in uterine height, which means that around 9 months of pregnancy, the mother's uterine fundus will be at its highest point during pregnancy, but when the fetus enters the pelvis, the uterine fundus will return to the height of the 8th month of pregnancy.

Lower abdomen with slight pain

The baby's downward position will compress the pregnant mother's genitals and sacrum, so there will be a feeling of falling and tenderness in the genitals.

Lower body pain

After the fetus enters the pelvis, the mother will feel a distending and painful sensation in her lower body, as if she can feel the baby moving downwards.

Frequent urination

After the fetus enters the pelvis, the uterus presses on the bladder more strongly, causing the bladder's urine storage function to weaken, so pregnant mothers often feel the urge to urinate. Remember to try not to hold your urine.

Breathing becomes easier and appetite becomes better

Before the baby enters the pelvis, you always feel difficulty breathing. After the baby enters the pelvis, the fetal position drops, and the pressure on the mother's heart, lungs, and stomach will be greatly reduced. Therefore, at this time, the pregnant mother's breathing will be much easier and her appetite will also improve.

Factors that affect fetal engagement

1. The pregnant mother's pelvis is small, which makes it difficult for the fetal head to enter the pregnant mother's pelvis smoothly.

2. The fetal position is not head position, the baby's head is not facing forward, and therefore cannot enter the pelvis.

3. The fetus is too heavy and the biparietal diameter is long, which makes it impossible for the head to enter the pregnant mother's pelvis.

4. If pregnant mothers often lie in the "Ge You" posture when resting, it will make it difficult for the baby to enter the pelvis, and even if the baby enters the pelvis, it will easily jump out.