The HCG level in the body will increase after pregnancy, and some pregnant women will experience nausea, vomiting and loss of appetite, which is a normal pregnancy reaction. The level of progesterone in the body will also increase, which will slow down the gastrointestinal tract movement of pregnant women and aggravate the symptoms of loss of appetite and indigestion. Pregnant women are advised to eat fewer and more frequent meals and to eat light, easily digestible food. If the nausea and vomiting are serious, you can take oral vitamin B6 for antiemetic treatment. If the pregnancy reaction is serious, liver and kidney function, thyroid function, blood biochemistry, etc. should be checked, and fluid should be replenished in time to correct acidosis, so as not to affect the development of the fetus and harm the pregnant woman’s body.