Want to vomit can not vomit only acidic water may be pregnancy reaction, mental stress, gastritis and other factors caused. 1. Pregnancy reaction: After pregnancy, due to changes in hormone levels, nausea and vomiting may occur in early pregnancy. If there is less food in the stomach, the symptom of vomiting only acidic water may occur. The symptoms can be relieved by adjusting the diet, such as eating alkaline foods like soda crackers. 2. Mental stress: When you have been under too much mental stress recently and are often in a state of anxiety, it may reflexively cause the symptoms of vomiting. If the stomach has been emptied of food, there may also be a situation where you want to vomit but can’t, and only vomit acidic water. Psychological treatments, such as positive mental suggestion and distraction, can be used to relieve the symptoms. 3. Gastritis: When inflammation occurs in the gastric mucosa, it may lead to a weakening of the secretion function of the wall cells, which reduces the secretion of hydrogen ions and leads to indigestion. If it happens that the stomach is in a state of emptying, there may be a situation in which you want to vomit but can’t, and only vomit acidic water. Symptoms can be relieved by medications such as omeprazole, rabeprazole and ranitidine. When the situation of wanting to vomit can not be vomited only spit acid water, should promptly seek medical attention, under the guidance of the doctor to clarify the cause of the disease, active treatment. Medications need to be used under the guidance of a doctor.