@arty0mk - I'm sorry that your doctor was not more helpful. But I think you are very much incorrect in deciding that CFS was the culprit.
ME/CFS is defined by a pathological reaction to exertion. Exercise does not help us. It makes us extremely sick for days or weeks afterward. If someone finds exercise helpful in recovery or in just generally feeling better, it is a very strong indication that they do not have ME/CFS.
But not having ME/CFS is something to be grateful for, because people with ME/CFS don't recover with supplements, or exercise, or diets, or SSRIs, or anything else thus far. I'm glad you recovered, but I don't think it is relevant to people with ME/CFS.
You said ME/CFS, he said CFS. There is a difference. As I said above, he may well have fit the Fukuda criteria.