In my experience with a narrowing ileum, now removed, the pain has always been on the right side, but nowhere near my ribs. It's much lower down, about halfway between my hip bone and my ribs. The pain I had just under my ribs was an enlarged liver, but that went away. Just my two cents, hoping for the best for you!
diagnosed 11/06, solving the mystery of years of on/off abdominal pain. No more "it's just a virus". 33f with 2 boys, a lovable dog, and a wonderful husband. 150 mg Imuran, bowel resection 9/07, healing well and feeling well. Entocort 9mg.