Schedule a visit with the diagnosing physician to discuss. This takes a pretty long discussion usually.

Food neither causes nor treats stomach ulcers. There are no specific foods that need to be avoided or should be eaten in greater quantities. A healthy diet (fresh fruits, vegetables, lean meats, lowers carbs, e.g., Mediterranean diet) is good for you in general, but will not mitigate against ulcers specifically. Most ulcers are caused by H. pylori infection or medication side effects.