Several times a year my penis will become numb with moderate to severe pain will follow behind my testicles in that area before my rectum. I am a 49 year old black male. I get regular prostrate exams and thankfully they all are ok. I just can't understand where this pain comes from and why. I know that I am going to have pain when my penis tingles and begans to get numb. My sex life is fine, no problems there. Please help me?