The docs said I have an indeterminate form of IBD...they can't figure out if it's CD or UC. I tend to have bad abdominal pain, joint pain, and other weird symptoms--but not extreme bowel symptoms. Also, when they found my disease, my transverse bowel was the most inflamed, not the bottom portion as is common in UC. CD, from what I understand, is more prone to 'skipped' areas of inflammation, whereas UC usually starts at the end of the GI tract and works its way up.
This is just MY experience, of course....and I'm no doctor. But I will say this: IBD is very different in everyone. I think it's very possible you got an in incomplete diagnosis. IBD is very sneaky and hard for even doctors to figure out sometimes.
Hang in there and keep in contact with your doctor. There are more treatment options all the time. Be well this evening!