Try to see a rheumatologist - that's the one who diagnosed me. My GP referred me to one after all the other blood tests and scans turned out "unremarkable". Because they are trained to diagnose Fibromyalgia or Lupus which have similar symptoms to CFS, and once eliminated, a short interview is all a rheumatologist needs to make a tentative conclusion , with a follow up later (no tests for CFS yet). Good luck.
You can read up about this with Dr. Teitelbaum-he has a whole thing on end fatigue. I was diagnosed by a integrated doctor. Thats an MD who knows complimentary medicine. You need to do a lot of searches in your area for complimentary doctors, or integrated doctors, or altenative med. doctors. I would just make sure they are doctors as well (MD) why not have the best of both worlds.