possible crohn's..need advice.

Hi, I am just curious about the disease. I have been in severe abdominal pain for 8 years now. Just last Thursday I had a colonscopy which showed an ulcerated terminal ileum. My doctor took biopsies and said he thinks it is crohn's. However, when i saw the doctor today he said the results said they can not give a definite diagnosis for it. He said he was shocked because he was there and knew what he saw. How else can they determine whether I have it or not. He gave me entocort and told me to take 3 a day. He also gave me tramadol for pain. I have been struggling for so long now and was actually hoping for a diagnosis just so I could finally get some help. Does this medicine work? How fast? Does it get rid of the ulcers? Please help!!!