T123,
Welcome to the forum.
I am so sorry you are suffering so much.
I agree with the others, you need to get another GI.
It's dangerous to quit prednisone cold turkey. He's obviously incompetent.
I too, am a little confused as to how he diagnosed an infection through flexsig?
Did he do extensive blood work (that might reveal an infection)?
Did he do any stool testing ( for c. diff or parasites)?
Are you still on any of the other meds given you, rectals and coliside?
I know it's frustrating, but it's a matter of finding what's going to work for you, and that's trial and error in many cases.
I was bleeding (very badly) for more than 1 1/2 years before finally getting it under control.
I didn't respond at all to any of the meds they gave me, and when they finally gave me a choice of remicade or colon surgery, I balked and had to find my own way.
For me it was a multi-approach that worked best: diet modification, certain supplements, and LDN - low dose naltrexone.
Although the other things did reduce my symptoms, the ONLY thing that stopped my bleeding was the LDN.
There are things IMO that you can control, which will have a direct impact on your disease, the symptoms you experience and their severity.
I was able to control my UC into remission through various supplements, probiotics, diet modification, and LDN , low dose naltrexone.
For 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.
Definitely get yourself a new doctor.
I hope you feel better and let us know how we can help you.