I've had chondritis off and on for quite a long time.
I finally made it in to see a pain doctor who diagnosed me as having 'severe, chronic chondritis'. He set me up to get a 'TENS' device, and it has really made a difference in my quality of life. It's just this little machine, about the size of a deck of cards that slips into your pocket, with electrodes attached that I put on over the area of pain. The idea is the electrical impulses from the TENS disrupt the nerve impulses to the brain that are signaling pain.
Like you, Maria, I've had multiple tests to rule out anything 'serious'.
But living every day in pain is serious
! Talk about increasing anxiety!