I am 27 years old...I am facing pre mature ejaculation problem. It happens during penetration or after few seconds of penetration.Neither I have a tight foreskin nor my glance is hypersensitive.But I'm little bit stressfull due to career related problems and abviously for sexual life after facing this problem. I am unmarried so I have not much experienced about sexual intercourse.But I have faced 3-4 times this issue when did I get a chance to intercourse.In these chances once when I had ejaculated in very early..I again tried 2 hours later without any foreplay and this time I had lasted after 1-2 minutes.But each time when did I tried very first attempt i was ejaculated in few seconds or during penetration. So please help me.