Some pregnant women have a better constitution and do not react to the elevated HCG in their body after pregnancy and will not have a pregnancy reaction, which is normal, and not everyone will have a pregnancy reaction. As long as the pregnant woman has normal pregnancy checkups and does ultrasound embryos appear on schedule with fetal buds and primitive heart tube pulsations, the pregnant woman does not need to worry about whether she will have a pregnancy reaction. In early pregnancy, you should take oral folic acid every day to prevent neural tube abnormalities in the fetus, and pay attention to a balanced and diversified diet, supplementing 3-4g of lean meat every day to increase high-quality protein, and eating fresh vegetables and foods with high dietary fiber, such as coarse grains, to keep your bowels open.