@yodemo, I really do encourage you to request an appointment at Mayo. If that isn’t an option for you, then maybe try a larger teaching hospital where they will work collaboratively with other doctors to find out what’s going on in your body!
I don’t know where you live but Mayo does partner with some health systems which meet with their high standards of care. Here is a map of the affiliated hospitals and clinics nation-wide that are in the program.
https://www.mayoclinic.org/about-mayo-clinic/care-network/network-members
Are you taking meds for all of your symptoms?