I woul see an autoimmune specialist doctor. If not RA there are a lot of other similiar autoimmune diseases that have similair symptoms. I have several autoimmune diseases and could not be diagnosed until I saw a specialist. I hope they find out what it is quickly for you! I just had the band a week and a half ago, and it did aggravate my symptoms, but with you being 2 years out, I would guess it is probably not related.
Good luck! God Bless!