Did you talk to your doctor yet? Seems like you are doing all the things that work fast, prednisone and rowasa.
I guess I would be trying an even higher dose of prednisone, but be prepared for surgery if it doesn't get results quick. My doc bumped me up (to 40) for one day, and I was surprised how much that helped.
So sorry you are suffering so.
49 year old female attorney, diagnosed UC/pancolitis 1985, no surgery but much suffering. Asacol/5ASA 6x400 mg maintenance for 20+ years; use prednisone & Rowasa for flares.
August 2008 sought care of naturopathic doctor. Food sensitivity test showed wheat/gluten, other intolerances; eliminated all wheat/gluten from my diet. Probiotics (Ultimate Flora, 50 billion).
Flaring, seasonal? Back on prednisone, tried to taper but now back up to 30 after several really bad days. Humira denied, waiting for approval to start Remicade.