It is normal to be pregnant for more than 8 weeks without vomiting for a few days and now start to vomit again. Pregnancy vomiting after pregnancy usually does not occur continuously, most of the manifestations are intermittent, stopping for a few days and then reappearing again. After pregnancy, the body’s estrogen, progesterone, HCG levels increase, pregnant women will experience nausea, vomiting and other early pregnancy reactions. As the gastrointestinal function becomes more fragile, pregnant women’s sense of smell, the perception of smell has become particularly acute, smell the more irritating odor may appear pregnancy vomiting reaction. 8 weeks pregnant is the peak stage of pregnancy vomiting, this time there is pregnancy vomiting performance is normal, but pregnancy vomiting is generally not persistent, may stop a few days after the reappearance, this is generally normal, can not indicate that the fetus intrauterine development problems. This is generally normal and does not indicate a problem with the development of the fetus in the womb. It can be gradually relieved through treatment. Each woman’s physical condition is different, the performance of pregnancy vomiting is not the same, can not be based on the physical performance to judge the development of the fetus, usually do a good job of pregnancy checkups, there are abnormalities can be detected in a timely manner.