stretching and jelqing risks
I tried a stretching excersize and jelqing for one night 20 mins. each. The day after i was getting intimate with my girlfriend and noticed that i couldn’t hold a strong erection for more than a minute. This really worried me and i was wondering if i damaged any thing in my penis. Could i have damaged anything and if i had is it permanent? What can i do to assure that i did not damage anything and how can i fix it?