Generally speaking, pregnancy vomiting occurs around 40 days of pregnancy, but there are individual differences. After pregnancy, the pregnant woman’s body HCG level rises, in about 40 days after menopause will appear in the reaction of pregnancy vomiting, but also can be manifested as anorexia, fatigue, etc., mostly in about 12 weeks after menopause will be able to disappear on their own, and some pregnant women vomiting reaction will continue throughout the pregnancy. Some pregnant women will continue to experience pregnancy sickness throughout their pregnancy. Some pregnant women may not experience pregnancy sickness at all, while a few may experience severe and persistent nausea and vomiting, which may even lead to complications such as dehydration and ketosis, and require hospitalization. The time when the pregnancy vomiting reaction occurs varies from person to person and is not absolute. If the pregnancy vomiting reaction affects the normal diet, you should try to avoid the vomiting triggers, eat small meals with nutritional combinations, pay attention to rest, and exercise appropriately.