I have been experiencing symptoms of Crohn's for about 18 months. Initially I thought I was just having bad side effects for medications to treat my Sjogren's and Rheumatoid Arthritis. By the time I got around to getting a colonoscopy I was on Humira, MTX and prednisone (along with a bunch of others). The test came back normal...not Crohn's. Is it possible that because I was basically on all the meds for Crohn's that it came back normal but I still have it? TIA