Frequent regurgitation and nausea may be due to early pregnancy reaction, chronic pharyngitis, gastric ulcers and so on. 1. Early pregnancy reaction: This condition only occurs in pregnant women, in the early stages of pregnancy due to a substantial increase in blood HCG, which will lead to frequent nausea, vomiting and other phenomena, a physiological reaction. 2. Chronic pharyngitis: chronic inflammation in the pharyngeal mucosa, submucosa and its lymphatic tissues and other parts of the pharynx is known as chronic pharyngitis, which can produce persistent foreign body sensation in the pharynx, and some patients will stimulate the throat, causing frequent nausea, vomiting and other symptoms. 3. Gastric ulcer: Nausea and vomiting is a common reaction in patients with gastric ulcer, which can be diagnosed by gastroscopy, barium meal and other tests. There may be other reasons for frequent regurgitation and nausea, so you can go to the hospital for relevant examinations to clarify the situation.