Hi jchoffman

Sounds like a lot of things might be going on. What I suggested was more treatment oriented for indistinct musculoskeletal problems. However Physiofixme is absolutely right in suggesting having another look at an adequate diagnosis. History of arthritis in sibblings/parents is an important. So how about this:

if you can organise it get a good diagnostic workup. May be best to get a referral to see a rheumatologist or at least get your general practitioner thinking along those lines.Get things like rheumatological disease ruled out. Another possibility to check if you have developed a chronic pain syndrome if no other clear organic disease is present. this could lead you down a pathway of pain management that can be helpful.

However at the end of the day if nothing is showing up diagnostically then you are just one of the masses of people with non specific musculoskeletal pain. And that may be where you could take on board some of the suggestions for management I have made