For the past few months, the head of my penis has been pretty much completely numb. At first, I felt pain in areas of it, like it was being pinched. And gradually, it just became numb. Sexual sensation is probably 2% of what it used to be, whether I masturbate or have sex, and it's completly numb to cold. I'm not depressed at all, or on any medication, and I still get turned on and get erections. This has really been ruining my life though...have any of you guys had this or know what could be going on?