Second pregnancy reactions are not necessarily more severe than the first pregnancy, and vary from person to person. The second pregnancy reaction may be easier or more severe than the first pregnancy. Generally, the pregnancy reaction is not related to the first pregnancy, and there will be individual differences in each pregnancy. Pregnancy reaction may be a normal physiological phenomenon, or it may be caused by mental factors. If there is excessive tension, it will cause the pregnancy reaction to aggravate, usually after adjusting the state of mind will gradually ease. There are also some women who do not have pregnancy reactions when they are pregnant, which is also a normal physiological phenomenon, so there is no need to worry too much. It is recommended to do a good job of maternity checkups during pregnancy, do not overwork, and seek medical attention if there is any abnormality.