I am so sorry you are having so many issues. I know how aggravating it is to feel so bad for so long and not have definitive answers. I was diagnosed with 3 autoimmune diseases within months of one another (RA, Celiac and Hashimoto's). I began to distrust Drs (at least conventional ones). I do NOT have RA! The reason my ANA and Sed rate had stayed elevated for so many years was due to the inflammation in my body from Celiac! Once I went gluten free, all my symptoms disappeared and my labs returned to normal. I am so glad I refused the medicine they tried to get me to take at that time. Sometimes we have to advocate and stand up for ourselves. I finally sought an integrative Dr and haven't looked back. My Hashis and Celiac are now managed and I feel so much better.
I pray you find answers soon and get on the road to recovery fast!
Yes, we did rent a car from Enterprise, at the airport (we flew in from Austn, TX). It was one of the fastest and easiest pickup and returns we've had!