Trying to get diagnosed....for something

  Maybe some of you could help me out.  First, a brief history.  Last August, I came down with an illness that lasted about a month and a half.  The symptoms were very much like Lyme disease, as a matter of fact, I've posted here in the Lyme forum before. I never tested positive for anything. It left my body in late September and then I was fine for a few months.  Around Christmas, I developed achey joints very much like Rheumatoid Arthritis. My doctor ran tests and sent me to a rheumatologist.  I think I also posted here about that.  I never tested positive for anything, and it went away after about another month or so.

I was fine for awhile again, until April.  I developed low back pain and fatigue.  My doctor put me on antibiotics for what we thought was a UTI. Urine test came back, it said there was no UTI.  The back pain, headache, fatigue, pelvic pain, fever and night sweats persisted.  Doctor sent me for a Cat Scan, and MRI and more blood work.  Nothing.  I don't have swollen lymph glands, I am not pregnant, I don't have Lupus, Lyme, RA, Mono, thyroid issues, hypertension, Hepatitis, or any of the other things that the doctors have tested me for that could indicate fatigue, fever and pain. I am 26 and have been married for four years, no risk of STDs. I have had several CBCs and they are fine. I do think being on antibiotics *may* have helped me feel better, though don't know if it's a placebo effect. I do have a history of repeat infections (sinus, UTI, ear infections), I think I may have a lowered immune system, and my father has had autoimmune problems (RA and Grave's disease).

Regular physician asked me to go back to the rheumatolgist.  He said if there's a possibility of Chronic Fatigue Syndrome, then she'll help diagnose it by ruling out anything else there could be. 

Sometimes I feel so sick and tired, I can't get out of bed, I will sleep for 12 hours.  Sometimes I think I'm crazy, and the only tangible evidence I have that something is wrong, is the temperature that registers on the thermometer. 

Can anyone shed some light on this? Am I seeing the right doctor, as in, is there another specialist I should see?

Thank You very much for any help!

Everyone at this board is so nice to talk to, even when I thought I had Lyme and RA.

It is very hard being tired and feverish all the time...while having headaches..and another thing is ringing in my ears and terrible nightmares I've had recently.  So frustrating!

My rheumatologist appointment is next Monday, so hopefull she'll have something to say.

And I never thought of the point you made....if you're getting fatigue and fevers anyway, how can you tell when you're sick with something else, like an infection? Arggh!  That's probably why my doctor was feeding me antibiotics the last few weeks, even though he wasn't sure they'd do anything.