I can only speak from my own experience with UC. I was in a very bad flare last year from May thru the end of Oct. During that time I was hospitalized for ten days. When I was discharged from the hospital I was still sick as a dog. I had pain radiating into my vaginal area down into my legs. I even saw a gyn doctor as I thought maybe I had an infection in my vagina or cervix. That all came back clear and she explained that I was so inflamed in the rectum the pain radiated to the other areas.
It wasn't until my GI doctor "jump started" the prednisone at 40 mgm with a 10 mgm per week taper that I was able to achieve remission. When my prednisone was started at 30 mgm and tapered I would always relapse after being weaned off for two weeks. I also take 6MP. That, along with the prednisone, is what helped me into remission.
I was on Cipro for awhile. When the doctor gives me Cipro, he also has me take Flagyl along with it to keep the "good" bacteria from getting destroyed. At least that is how he explained it to me. I also was on rectal meds...Cort enemas alternate nights with Canasa.
I took Hydrocodone for pain. It helped a lot.
I cannot understand why you are not on an antibiotic. Antibiotics are used to treat infections! Aren't they giving you anything for the infection at all? I would search out another opinion and fast!