Im 20, man. im ejaculating within 1-2 minutes while masturbation, and i ejaculate very excessively, nearly 18 times a week. does my quick ejaculation leads to premature ejaculation when ive sex? help? i watch porn for masturbation?

It's hard to predict; however, I think you should reduce the frequency of masturbation, a moderate frequency of several times a week is more appropriate. Your behavior can lead to pornography addiction which can be a serious issue.

I think you are overdoing things. Give porn and masturbation a rest. Everything in moderation is OK. Ejaculating too soon during sex is premature ejaculation. But dont speculate about it. You never know- and may be fine given the right partner