Hello SandJetty ~
I'm sorry to hear that you have been struggling recently, especially after you have already survived so much! Unfortunately, there isn't a single test that can definitely diagnose RA. Instead, an RA diagnosis is made from a combination of blood tests, x-rays, physical symptoms, and medical history. So the best thing that you can do right now is continue working with your doctor and perhaps get in to see a rheumatologist if you have not already done so.
In the meantime, here is an article with some additional information about diagnosing RA that I thought you might find interesting: https://rheumatoidarthritis.net/diagnosis/
Best of luck and please remember that we are here to support you!
~Mariah~ (Site Moderator)