Hi I am 29 years old Man. My problem is that I am circumcised and in one year of my marriage while performing sex my foreskin do roll back but I still feel very tight since the frenulum is connected with top of my penis. I could not ejaculate at the time skin has rolled back even I after performing sex for 20-30 min. I could ejaculate only when I insert my penis with my hand holding it tight so that skin do not roll back. What should I do to ejaculate even when my skin has rolled back.