Is it PMR?

As I've shared in the past, I have had terrible pain in my arms and legs (shoulders & hips) for over 10 years. I was relieved when I got my PMR diagnosis a year ago thinking there would be a way to control my pain. It also thought it gave me some credibility about my pain - it isn't all in my head, and it isn't fibromyalgia.
Mid November I went to the beach with my husband. I had had some problems with trigger finger on my middle finger on the right hand, but used my cane to walk anyway. On the second day both hands became swollen and I couldn't make a fist with the right. I thought for sure I had irritated my "mild" carpal tunnel. Eight weeks later, I finally was referred for an MRI on the hand. I was SHOCKED by the results.
My diagnosis changed in an instant to Seronegative Rhumatoid Arthritis. It is RA that doesn't show up on any bloodwork. We never would have figured it out if my hand hadn't blown up. Same treatments as PMR. So I guess now I'm in the wrong group.
Thank you all for your encouragement, knowledge and love in this group. I wish you all a pain free and happy New Year.
Terri