I'm 21, sometimes i can't get an erection or able to keep it long enough. i also ejaculate prematurely. is this erectile dysfunction? what can help me?

Need help: When you get an erection is it you can not penetrate into the vagina then it is ed . As far as the premature ejaculation you can get help there are medications available.

Erectile dysfunction: There are various reasons that cause this difficulty, some medical and others psychological. For instance men who are overly anxious when becoming intimate often have difficulty maintaining an erection. Consult with a urologist and if cleared medically and the problem persists consult a clinical psychologist who can help you understand and treat this problem. My best.