Injury Help Pls. Have reduced a lot.

Hi,about four months ago, my friend hit me in the testicle area jokingly , there was good amount of pain which reduced with time. I went to a general physician and he checked and said everything was fine as there was no swelling or anything , he gave me some medicines as I described him my situation. He said there was nothing to worry about , later on for assurance I got a ultrasound the report turned out to be normal and I also got checked up by another urologist he said every thing was fine. My issues: - Left testicle felt smaller but ultrasound was normal.There was numbness from the base of my left penis to the upper left part which I feel has reduced over the course of time but I still notice numbeness and a bit less sensitivity on left side of penis.My left testicle feels colder than the right sometimes it feels normal but many of the times it feels colder. - When penis is erect the base of the right side of the penis feels stronger and i feel morning erections have reduced a lot.