A few years ago I read on the internet about physical exercises that can help grow your penis size. One of these exercises included milking your penis outwards to fill up your blood vessels and increase pressure hence stretching the vessels. This would help your shafts thickness.
Since then I have been casually exercising this technique every now and then in the shower (fairly rarely actually). 3 days ago I was doing this not more aggressively than usually when suddenly I felt a popping sensation. No pain. Then my entire penis went numb.
Today, 3 days later, my entire penis and testicles are still nearly entirely numb and I can't feel anything with it. My testicles are not as sensitive, and I can't detect hot from cold or anything else with my shaft and head. I can only feel a slight pain if i pinch the skin really hard. I read somewhere about a blood vessel shut down or damaged which seemed to fit the bill. Could this be it?
I can still masturbate and ejaculate (twice since last sat), but it's not the same without me feeling it. Is there a chance this is permanent? what can I do to help?