I would suggest you talk thru your delima with your PCP. I discovered that several of my pains that my rheumatologist lumped into PMR have other unrelated causes. Also being on Prednisone for 2 years can interfere with your adrenal glands functioning. you might eliminate! that as a source of some of the problems.
Do online research either before a visit or afterwards to arm yourself with facts.
Just guard against self diagnosis. Dr Google does not know you and the details of your history.