How painful is first childbirth?

I am giving birth for the first time now, and I am going to have a normal delivery, but my friend said that it will be very painful. How painful is the first normal delivery?

How painful the first child's natural delivery is depends on the sensitivity of the pregnant woman to pain and the size of the fetus. If the biparietal diameter of the fetus is relatively small and the pregnant woman's own pain If the baby is not very sensitive, the pain of the first natural delivery is not very great; but if the fetus is relatively large, the biparietal diameter is also relatively large, and the pregnant woman is sensitive to pain, the pain during natural delivery will be very severe. The pain is the strongest at the moment of delivery of the fetus, and then the pain will gradually decrease and ease, so the mother must be mentally prepared.

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