Hi I was recently put on Flagyl for Diversticulitus. I then became more ill.Finally a Doctor took stool samples and found that I have Clostridium Difficille Colitis.It can be caused by taking antibiotics such as Flagyl. Research side effects of Flagyl and Look up C-diff what I have. As many times as you have be on Flagyl I bet that could be the cause of your now current symptoms.C-diff can cause swelling and irration of the large intestine,or colon. Then you will get diarrhea,fever and belly cramps. Best Wishes Please excuse my typing.View Thread