Upset stomach and diahrea -Gut flora imbalance after CDiff antibiotics or flare?

For months I have been on and off antibtiocs for C Diff, flagyl and vancomycin . Just finished 2 months of vanco and finally tested negative for C Diff, but about ten days later started getting loose and frequent bm,s. Every time I eat within the hour I get cramps upset stomach but then have a bm and feel fine, but really hungry again. This happens every couple of hours . Been the past 4 days, no blood so don't think it's a flare but not sure how to know. Thinking it could be my stomach adjusting after months of antibiotics so taking floraster and bio k plus but don't know if that's helping or hurting. And I know my dr will never promote probiotics bc he always says there not scientifically proven yet so lost on that end. Has anyone had stomach issues after getting rid of c diff and been blr to fix it? Or is this a flare ?

Thanks!
Diagnosed dec 30 2013
50 mg of prednsione tapered until aug 1 /2014
16 mg of mazavant nightly
Flagyl for two weeks twice, and vancomycin two weeks, then again for two months.

I feel sorry for anyone who fights both C-Diff and UC. It sounds almost impossible to tell which is which and since antibiotics almost always mess up your UC but sometimes don't completely get rid of C-Diff, all you are left with is question marks. I will say this though, your doctor is a complete idiot for flat out not believing in probiotics. VSL in particular has been well studied for UC and even helps with C-Diff. There IS scientific proof!