Marcus,
If you still hunting for a diagnosis, consider getting a good Lyme doctor -- no easy feet. The better ones use this company for blood testing:
https://igenex.com/ticktalk/category...ic-approaches/
I had similar symptoms to you back in 2005. My illness turned out to be from hospital-acquired infection, which somehow alluded over 20 different doctors. It turned out to be mycoplasma pneumonia. I was dying for two years, slowly, and I had to figure it out myself. If I didn't, I'd be dead.
Please see my research and documentary site:
https://www.whyamistillsick.com/
I'd be happy to help if I can!