Anacyde couldn't have said it any better than what I was going to write! So I will just say "ditto"..LOL...
A Board Certified Rheumatologist is your best bet...
Good luck..
Arthritis is not a disease of old age. Mine started in my teens. A rheumatologist can diagnose arthritis, if that is what is causing your pain. There are medications that can reduce joint inflammation, and thus the pain associated with it.