The biggest reason is the increase in progesterone production. In the first three months, this hormone is generated mainly in the ovary. It prevents the body from rejecting the fetus and increases the endometrium, the inner tissue of the uterus that, if not well developed, can cause a miscarriage. The problem is that it also slows down the gastrointestinal system, which results in discomfort. After the third month, the placenta starts producing progesterone and the body begins to get used to it, reducing nausea. Some women, however, continue to feel sick after this period of pregnancy.
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hormone pump
Progesterone radically alters the body of the pregnant woman
lazy intestine
Progesterone relaxes smooth muscles – the ones you don’t voluntarily control. The food ends up circulating more slowly through the intestines and the uterus presses the colon, inhibiting the passage of feces. This is why pregnant women suffer from constipation.
Low pressure
Blood vessels are also more relaxed, decreasing blood flow and pressure. So, the mother-to-be feels that sluggishness and dizziness that can also cause nausea. But that’s all normal, unless she feels too weak and can’t feed.
Full tummy
Usually, we already feel an empty stomach two hours after eating. But, because of the slowdown in the digestive system caused by progesterone, the pregnant woman has the feeling that she is “full” up to eight hours after eating! From there to the urge to vomit, it’s a little jump.
Another explanation is that, throughout evolution, the pregnant woman learned to expel what she ate to protect the baby from some unknown (and toxic) food.
Consulting Dr. Alberto Guimarães, obstetrician at the Parto sem Medo clinic, and Dr. Eduardo Zlotnik, gynecologist and obstetrician at Hospital Israelita Albert Einstein.