What meds are you on, Cara? I've read that prednisone and 6MP can mess up the cycles. Although UC itself could mess up your periods since your body is not "normal."
The pill really messed up my periods. But when I wasn't one them, I went back to normal cycles. I do tend to have a couple more and looser BM's around that time.
Female, Age 19, Dx w/ UC August 2007
9 Asacol, Rowasa, 1000 mg Canasa, Proctofoam, Rifaximin 2/day
Digestive Advantage (Crohn's & Colitis), 1 Florastor, 50 mg 6MP,1 Primadophilus reuteri, 1 DanActive, Remicade (1st infusion 06/08), 2.4 g Lialda