With those tests for RA lupus and other autoimmunes you can get false positives and false negatives, so you can’ always believe the results. Sometimes you have to be tested several times before you can be diagnosed.

I also use a PPI for hiatal hernia called Dexilant after being on Tecta for years. While I do have fibromyalgia I have linked bone/joint pain to my Dexilant. I try to take it every other day and watch my eating and never lay down too soon after eating on the days I miss a dose. This helps not add to my pain.

I am quite sure that most of us have undergone many tests. I was told it was to rule out any other type of illness. I have lots of experience with the pain you are describing. Sometimes my knees hurt so bad that I cannot walk. The cramping is just rude - middle of the night I wake up screaming in pain. My muscles hurt all the time. I have found when I lay still, with the proper pillows and my heating pad, I do not feel the pain as much. I had to take myself off Tramadol (pain) so I am trying different modalities.
Take Care

@asainmomof2 unfortunately I think joint pain is just a part of fibro. That’s where most of my pain is, in my joints.

Been on Prevacid for years. Pain has never changed