I’m so scared

Everyday I wake up, I urinate yellow, as the day goes on without drinking barley any liquids it goes to almost crystal clear after a few urinations. I’m not overly thirsty, I don’t really even care to drink liquids so it’s pretty safe to assume it’s probably not diabetes insp. My I have back pain in the kidney area, I’m pretty tired most the time, I have no clue what’s going on. I’ve had urine tests, multiple blood tests, ct scans, X-rays, ultrasounds, a cystscopy, culture urine tests my kidney function is fine, my kidneys looks fine, the inside of my left kidney looks fine when I had my kidney stone blasted. I’m so lost for answers but what I feel is that I’m not gonna be on earth much longer and it terrifies me. I used to be able to chalk this up to my kidney stone but now that’s gone I don’t think it’s kidney stone related. My anxiety is rampant, I have been in talks with my urologist and he doesn’t find anything to wrong, everyone says I look fine. I do have some potential spinal stenosis I guess. But idk what that has do with any of this…