Well if you're really flaring in addition to your c diff you could have your GI prescribe you pred/uceris. There are many other maintenance drugs out there. If he is refusing to give you meds I would seriously think about
a second opinion. I wonder if you can sue him I heard in America you can sue everyone for everything :D I'm just kidding. But your health is important and he should know that. I hope you only have c diff and once that's taken care of you have some peace.
I agree with Madcat, I couldn't have said it better. I just didn't think about
I hope you will get a second opinion and get better soon.