You don't need a stopwatch to determine whether you have premature ejaculation or not. If you are reaching organism level before you want to, you have premature ejaculation. Men who have this problem always reach the organism within two to three minutes of starting the intimacy. If you have a healthy relationship, it does not matter if this takes you one or twenty minutes. If you know that you are not strong enough in bed, it's time to do something about it. Causes.