I have no answers only support to offer. I too started with a possible CDiff diagnosis two months ago after suffering from diarrhea for four weeks following a course of Clindimycin for a UTI. I have taken two rounds of Flagy,l which help but somehow I always seem to slide back to the semi solid stool stage. Not sure if I truly have CDiff. Gastro doctor thought I have SIBO and also had me go through CT scan of gut which was normal. Big relief but no answers. What I have found is that there is no linear or straight line recovery. I can do OK for one or two weeks and then have a couple of days when my gut becomes irritated and I go back to the diarrhea. I understand your frustration and depression. Iam following a low FODMAP diet, eating no gluten or dairy and sticking to what seem safe foods but have lost a lot of weight . My next step will probably be colonoscopy, though I had a normal one a year ago. Other theory is I may have something called microscopic colitis. I am trying to nourish my body, keep as normal a life as I can and try to not have dark thoughts. It seems to take a long time and trial and error to come up with a diagnosis or not. But it is hard for me not to feel at times like God is punishing me or has forgotten me. You need to find a doctor who listens and cares because this is a scary process without medical guidance. I also take Align, Florastor and slippery elm as supplements along with my fiber and vitamins. I take a loperidol after each loose BM and wait until next one to see if I need one. I am fortunate in that I am self employed and have a bathroom near my office. I rarely go out to eat with friends because I am afraid of restaurant food. Not sure how it is prepared. Don’t drink alcohol, sodas or caffeine. Never been a smoker and thought I was in fairly good health at 63 until all hell broke loose about four months ago. I found the story of the poster who is in his/her nineties inspiring. I aim to be that person. Don’t know if this post helps but I am here as much to give as to receive support. Getting to see the right doctor takes a long time, then getting a diagnosis takes much longer, etc. In meantime, we are miserable, losing weight, thinking we have cancer, etc.