Sudden, sharp, cramping pain that begins in the back and the side in the area of the kidney, and spreads to the lower abdomen (one side)and groin, is typical for kidney stones.
This pain can spread even to the testicle as the stone progresses down the ureter.
It generally waxes and wanes, a pattern called “colic,” with the most painful periods lasting up to an hour. Nausea and vomiting may occur, and blood in urine can be seen, too.
Sometimes, fever develops.
Testicle pain after masturbation is spasm like pain that will manifest during ejaculation and may persist for a short period of time before subsiding.
Frequent masturbation is cause of this pain.


Best wishes!
Marija