You’re sleeping peacefully one night when suddenly, you’re woken up by burning pain in your stomach and chest and feel slightly nauseous. You roll over, trying to ignore the pain, but in the morning, it’s still there. After eating a small breakfast, you notice that the pain eases up some. This pattern repeats for the next several days, so you go to the doctor and find out you have an ulcer. What caused it? How can you get rid of it? Are there ways to prevent it from coming back?