I feel so frustrated, I started with pain on the outside of

I feel so frustrated, I started with pain on the outside of my feet, treated by physio for pereneal tendonitis. Did not work, went to rehab doctor, she thinks it's arthiritis, Sent to rheumatologist. He doesn't think it's arthiritis, gave me a cortisone shot as a diagnostic tool in the calcaneus as now i also have heel pain. MRI, shows some tendonitis pereneal brevis and a bursa posterior of ankle. Not sure what to do but I've had pain in both feet since August. A