I Have Had Bilateral Kidney Pain On And Off For

Question: I have had bilateral kidney pain on and off for about 5 years. With the kidney pain, there is no fever and no blood tested positive in the urine. About 5 years ago, I had some type of diagnostic imaging which revealed kidney inflammation, but eventually resolved. No cause was identified. Interestingly, I have also suffered pleurisy of the lungs wherein I have required hospitalization and needed about 1 quart of fluid drained off of each lung. Again, so cause was identified. More recently, I have noticed that my joints are stiff and I have chronic aching in my upper and lower spine which has led me to believe that this might be arthritis. It runs in my family, both rheumatoid and alykolosing spondylitis. I have had general testing for rheumatoid that were negative, but never specific through a rheumatoid doctor. I am told the testing is much different. So my question is what testing should I have done specifically both blood work and diagnostic imaging for the kidneys.

I uploaded labs. Is there anything g concerning. I have quite an elevated CA125. Would arthritis affect that?
Also, I am surprised that I wasn’t checked for the hlab27. Is that something that if you can be negative for and later in life be positive?