Dear Positive Karma, I don't have much else to offer. I will say this, we share "several" of same symptoms & for me meds have helped.
You asked about testing, I've been thru it twice, hub once & my mom once. Hub & I had it done at same office/clinic, my mom's was in another state, smaller town at a behavioral health clinic. I feel it is much more thorough but some pdocs just asked you some questions & go from there. It's whatever you're comfortable with & your rapore/bedside manner with this pdoc.
Before you consider a second opinion, call this pdoc you've seen already & ask if they do any testing. You say you live in a fairly large area, if it would make you feel better call other offices/clinics & ask about it.
I maybe the only reply you get here that has had any done so who knows.
Will look for next installment.
Best wishes.