Hi, My Boyfriend Has A Problem Masturbating He Does It

Hi, my boyfriend has a problem masturbating he does it a lot and when he did it when he was younger his left testicle had a tortion in it and he had surgery on it and now his same left testicle he had surgery on hurts him after he masturebates and he has muscle spasms in his legs and he noticed dark orangish particles in his urine. What do you think is wrong? I'm really worried.