I need to know why i'm in pain from the left kidney and radiating down to the left side of the scrotum. occasional burning sensation during urination.

You : You may have a kidney stone. The pain from a kidney stone commonly is off-center in the back, and radiates to the groin (along the path of the ureter). Blood in the urine is another common sign. I changed the category to urology, so perhaps a urologist can give you more complete information. Feel better.

Possible stone: a ureteral stone is one possibility. See a urologist for exam and diagnosis