i recently went to Dr with severe pain in my right side, like a stitch, after a few days earlier mixing cement all day, Dr suggests I may have pulled a muscle. After 1 week on Ibuprofen no change, returned to dr, had a urine test, ok, taken me off Ibuprofen, just co codomol. had a blood test, Dr wants me to repiet blood test as esr is raised...does this make sence, I am concerned as I lost my wife to Kidney Cancer 3 years ago, although her symptoms were not the same.