In the early stages of pregnancy, most women experience nausea, vomiting, anorexia, salivation, and other gastrointestinal reactions around the fortieth day of pregnancy due to increased hormone levels in the body. If nausea occurs in the middle of the night, it is often due to the friction of the gastric mucosa in the fasting state. It is recommended to eat less easily digestible food before going to bed so as to avoid nausea and vomiting in the fasting state. It is also recommended that if you have digestive symptoms and gastrointestinal symptoms during pregnancy, you should eat as much as possible if you can.