I have had a bad string of luck !! I got c. diff in sept from taking clyndimicin, took flagyl twice with reoccurance, had a colonoscopy diagnosed with psudomembraneous colitis/ c.diff in Nov. Took Vancomicin for ten days felt great for three weeks now its back! Took stool sample in for test two weeks ago came back negative for c. diff Dr. won't give me anything new because of negative result, I am not having severe D just once 1st thing in the morning and then nausea and cramping for the rest of the day. Dr gave me Pentasa for symptoms??? I don't feel it is doing anything but maybe making it worse, Any insight would be great, I feel like I have read everything about this and know it is a hard thing to treat but I am really at my whits end! I am so sick of feeling sick all the time!