Burning or gnawing pain in the upper abdomen
Pain that comes and goes, often worse when the stomach is empty
Pain that may improve or worsen after eating
Nausea or vomiting
Bloating or feeling full quickly
Frequent burping or acid reflux
Loss of appetite
Unexplained weight loss
Dark, black, or tarry stools
Vomiting blood or material that looks like coffee grounds
Fatigue or weakness from possible blood loss
Severe, sudden abdominal pain
Symptoms that persist for more than a few days or keep returning
A doctor’s evaluation and testing are needed to confirm an ulcer