I've recently been diagnosed with gastritis after an endoscopy and the gastroenterologist said the cause was a previous bacterial infection. I suffer from intense and painful stomach cramps and constant nausea whenever I eat. By saying the cause was just this "other bacterial infection," does this mean I now have the condition gastritis which means I'm in line for stomach ulcers and cancer? I've read that there are 3 reasons you get gastritis and they are to do with the immune system and this bacteria helicobacter pylori. Would the doctor have told me if I had this? Would biopsies taken during an endoscopy have found this particular bacteria, or should I try and investigate more what could be the cause and try to treat the cause instead of just "putting up" with gastritis. I'm 23.