If you don't mind my asking, did your diagnosis follow any period of time that was stressful or had you stopped smoking or had a virus such as CMV, Mono, or EB?
Do you try any dietary changes?
I had a bad case of mono in college and have had a recurrence just recently (many years later). At the time I was diagnosed, I'd suffered with what I guess was a bout of the flu for over a week. My GP put me on a broad spectrum antibiotic which almost immediately caused cramping, bleeding and constant D. A couple of days later, my GI did a flex sig and gave me the UC diagnosis.
I've found dietary changes to be very helpful in managing my UC and achieving remission. If you're interested in learning more, I'd suggest the following books:
Breaking the Vicious Cycle
The New Eating Right for a Bad Gut
Listen to Your Gut