The desire to vomit at 38 weeks of pregnancy may be physiological, or it may be caused by gastroenteritis, cholecystitis and other pathological factors. 1. Physiological: As the uterus increases significantly during the 38th week of pregnancy, the diaphragm rises after the uterine fundus is elevated, which may affect peristalsis of the gastrointestinal tract and cause delayed gastric emptying. Symptoms of nausea after eating can lead to 38 weeks pregnant want to vomit, especially when eating indigestible food, can aggravate this symptom. 2. Gastroenteritis: it may be caused by infection, overeating and other reasons, making the gastrointestinal mucosa appear inflammatory changes. Pregnant women can show abdominal pain, nausea, vomiting and so on, leading to gastrointestinal dysfunction, appearing 38 weeks pregnant want to vomit. 3. Cholecystitis: due to obstruction, infection and other reasons, can lead to acute or chronic inflammatory lesions of the gallbladder. Acute attacks can appear right upper abdominal pain, fever, vomiting and other symptoms. If it causes spasm of the common bile duct and gallbladder duct, it can also lead to wanting to vomit in 38 weeks of pregnancy. It is recommended to go to the hospital for timely consultation and examination to clarify the specific cause and then carry out targeted treatment. Diet to light, easy to digest food, avoid eating a large amount of food at a time, increase the burden on the gastrointestinal tract.