@ngarriso I really think you should be tested again for C.diff. With my 4th relapse of C.diff in October, my first stool sample came back negative. But after three prior bouts, I knew what it was. I had a second sample tested five days after the negative one and it came back POSITIVE. I was then prescribed Dificid (fidaxamicin) and finished that med on 10/26. It's a pricey RX and my insurance would not approve it until I had tried other meds. But it's one that kills the C.diff spores and does not attack your other good bacteria. Are you also taking Florastor or some type of probiotic with Saccharomyces Boulardii? I really think that has also helped me. I hope you get answers from your gastroenterologist and I wish you well in 2019.