naturalcurl,
Welcome to the forum.
Sounds like an intolerance to me, and it's a good thing you've brought it to your doctor's attention.
Ultimately, you have to be your own best doctor.
Did you ever ask your doctor if probiotics or diet modification can help UC?
I bet if you did, he probably said no.
From my personal experience, I can tell you that there are other very effective ways to control symptoms and minimize them, even go into remission through other means: diet modification, supplements, probiotics, making sure your have adequate vit. d3 (need blood test for it), and LDN (low dose naltrexone).
Please don't think that prednisone or the biologics is the ONLY way. There are other options to you.
If you are interested in getting more info on the protocol which has put me into remission, please go to this link: https://www.healingwell.com/community/default.aspx?f=38&m=1666318 , and look at the 11th post.
Please let me know how we can help you.