I was diagnosed with walking pneumonia and my doctor prescribed a...

I was diagnosed with walking pneumonia and my doctor prescribed avelox. 2 days into taking the med I developed cramps in the lower bowel and diarrhea and I was always tired no energy. I figured that the avelox killed the bacteria in my gut and started taking Acidophiles pills. 7 days into the meds I found this page and immediately stopped the avelox and called my doctor. He put me on biaxin and put a note in my record. NO AVELOX! Well it in now going on 4 week later and I still have diarrhea (explosive) and my doctor is baffled. He is sending me to my GI doctor now. I have Ulcerative Colitis. I am worried that avelox may have caused a flare up.