In 2003, I was in the hospital for a stomach infection. A month later I joined the military and a two weeks into my training I felt ill. I was discharged with colitis. Now this Feb. of 2009 I tried to reenlists, but I need a medical waiver. I have done the research for symptoms in colitis and I don't fall into this category. For example loss of weight, fatigue, bleeding in the stool, reflux, etc. What tests can I do that won't be expensive for me and tell if I really do or don't have colitis.