Quoting Rebekah Hankinson Trimmer:" I had similar symptoms and it turned out i have lupus and fibromyalgia. Lupus is hard to diagnose since ... [snip!] ... r close to what ur experiencing. It is a disease that can be delt with and u definitely need to make changing docs a priority!"
I didn't know the ANA isn't very accurate. I got tested for it a few years back when I had the same symptoms as OP. Only thing that came back pos was my EBV, so we figured I had a weird strain of that. Still having bad pain and joint issues, I'm gonna see if I can get more extensive testing