I spent 3 years (and thousands of dollars) trying to find out what was wrong with me until a neurologist tested me for Rocky Mountain Spotted Fever. It came back positive, he gave me 2 rounds of doxycycline and sent me on my way. Anyone with experience with prolonged tick-borne illnesses can tell you, that's not going to fix it. I went and got an appointment with a lyme-literate doctor (there's the typical 2-3 month wait for an appointment to see any of these doctors - if you're lucky.)
I don't need to be told that tests are unreliable or that doctors can be as misinformed as any of us. I am encouraging anybody in this thread who is personally affected to seek medical advice, not the advice of random internet commenters.
Congratulations on beating RMSF.
Unfortunately I have not yet beat it (or whatever other disease(s) the tick gifted me.) I'm still on 3-4 different antibiotics and feeling generally like crap. But it's 'only' been 3 months.
After seeing doctors and not getting better, it is useful to get an idea of what worked for other people because it might lead one on the right path.
Personally, I consider advice - both from doctors and on Internet forums - as advice, not gospel. I do research what doctors recommend, because they too are wrong or implicitly optimize for different criteria than you do (cost of treatment or their own liability vs your well being)
Anyone reading this with a therapeutic need should see a doctor, preferably more than one.