According to the search results, the symptoms of an ulcer can vary, but the most common symptom is a burning or gnawing pain in the center of the abdomen (tummy) . The pain may improve temporarily when you eat or drink or when you take an antacid, medication to reduce stomach acid. It may feel worse between meals and at night when stomach acid builds up without food to digest. It may also make you feel like you don’t want to eat. Other common symptoms include discomfort between meals or during the night, discomfort when you eat or drink, stomach pain that wakes you up at night, feeling full fast, bloating, burning, or dull pain in your stomach, and nausea. Some people may not have any symptoms, while others may experience severe signs or symptoms such as vomiting or vomiting blood, dark blood in stools, or stools that are black or tarry, trouble breathing, feeling faint, unexplained weight loss, and appetite changes. If you have any of these severe signs or symptoms, you should see a doctor right away.