At my last colonoscopy I was told I probably had irritable bowel syndrome. But it hasn t been much of a bother until lately. I am 68 yrs old. Lately I am having bad pains in my upper stomach. It will go away at night while sleeping but then when I eat it starts all over again. I have been having this since June 6th. That night I vomited and was in pain. I thought I had the flu. Always have diariah!