Dart0207, Have you had COVID by chance? It worsened my fibro pain and other maladies. I pray you get some answers from the Mayo Clinic.

My very wise primary (he retired a few years ago) told me after he diagnosed me with Fibro that the pain could resemble RA. I truly believe that.

I pray you get some answers. I will say this to you, Thyroid Disease tends to go along with Fibromyalgia and so does Arthritis.

P.S. Chronic Fatigue Syndrome can cause swollen lymph nodes. Fibro and CFS are twin sisters and a lot of times you can have both.

Blessings & Hugs...