It is normal to not throw up in the early stages of pregnancy. So many people have reactions when they are pregnant and some do not. What does this have to do with? After pregnancy, the hormone level in the body will be very high, the estrogen, progesterone, lactogen, some of these hormones will sometimes act on the smooth muscle of the gastrointestinal tract, resulting in spasm of the smooth muscle of the gastrointestinal tract, which will cause a series of discomfort in the gastrointestinal tract, including nausea, vomiting, constipation, are all symptoms of the gastrointestinal tract. Most people will have this symptom, but there are a few people who do not react at all and do not vomit at all, which is normal. Pregnancy vomiting is related to the individual’s physical condition and the level of estrogen in the body. If you have a good constitution and your hormone level is stable, many people do not have any reaction, which is normal. If the body is poor and the level of hormones in the body is high, some people will have severe pregnancy vomiting. Whether you throw up or not, it is a normal reaction.