Premature ejaculation occurs when a man ejaculates sooner during sexual intercourse than he or his partner would like. Premature ejaculation is a common sexual complaint. Estimates vary, but as many as 1 out of 3 men say they experience this problem at some time. As long as it happens infrequently, it's not cause for concern. However, you may meet the diagnostic criteria for premature ejaculation if you: Always or nearly always ejaculate within one minute of penetration Are unable to delay ejaculation during intercourse all or nearly all of the time Feel distressed and frustrated, and tend to avoid sexual intimacy as a result Both psychological and biological factors can play a role in premature ejaculation.  consult sex therapist or psychiatrist...

Premature ejaculation is a subjective thing. If u feel it is bothering u or ur partner, there are medications that can help. Try using a condom (especially the long last type). Try Masters and Johnsons stop squeeze technique.  Rather than thinking about controlling ejaculation during sex, relax and enjoy the act.