4. A stomachache
A burning sensation can certainly be indicative of a stomach ulcer; however, you might not experience such severe pain. Instead, you might develop a stomachache, which can be associated with a dull nagging pain. While this pain is not usually severe, it can be constant and certainly uncomfortable.
A stomachache could be attributed to the swelling and general irritation around the ulcer itself. Like a burning sensation, a stomachache may be more noticeable and intense during or after eating, or when the stomach is empty. A stomachache could be a sign of several conditions, but if it lasts for a long period of time, chances are that you have an ulcer.