Count me in. I get periods of days/weeks where I feel like I am at the beginning of a UTI, with the slight burning and general uncomfortable sensations in the bladder area. Sometimes I've even thought I must have a pelvic infection. I would go to the doctor and the test would come back negative. After that happened a few times I stopped going in for it. Then came the day when I actually DID have a UTI and ended up in Urgent Care for it because I peed blood.
I had been figuring it was just another "phantom" UTI. Now it's hard to decide when to go in and when not to. I've been feeling for the past week or two some of the sensations and since I was at the doc for another reason yesterday I requested a urine test and it came back fine! The doctor has tentatively diagnosed me with IC. Looks like it's just a symptom of fibro though?