I got the "it must be psychological" diagnosis. Turns out lots of people took months to actually feel well after getting the swine flu, and I was one of them. It was great to just shrug my shoulders and go home, figuring I'd either get well on my own or get worse, and maybe whatever new symptoms I got would lead to an actual diagnosis. In the meantime, my life spiraled out of control because I had no energy to do anything. Good times!