Dry heaving, nausea and upset stomach can be caused by pregnancy, digestive diseases, neurological diseases, side effects caused by chemotherapy, etc. It is important to follow the doctor’s instructions for symptomatic treatment. 1. Pregnancy: Pregnancy is a special period, pregnancy vomiting may occur, usually does not last a long time, but if pregnancy vomiting, you need to consult a doctor to intervene. 2. Gastrointestinal diseases: Gastroesophageal reflux disease (GERD) and pyloric obstruction may cause vomiting and nausea. Gastrointestinal stimulants such as Mosapride may be prescribed to improve the symptoms, and surgical treatment may be an option if necessary. 3. Neurological diseases: for example, when the intracranial pressure rises in the case of cerebral hemorrhage, the symptoms of optic papillae edema, nausea and vomiting will appear, and then we should follow the doctor’s advice to treat the primary disease, and if necessary, perform surgical treatment. 4. Caused by chemotherapy: chemotherapy drugs can cause digestive reactions, such as nausea and vomiting and other symptoms, you can follow the doctor’s advice to give metoclopramide to stop vomiting. The symptoms of dry vomiting, nausea and gastric discomfort should be actively consulted, and the cause of the disease should be clarified and standardized treatment in accordance with medical advice.