I'm definately on the young end of the spectrum (19), but I cannot achieve a full erection. I am not sure if this is due to how I was born, or due to my previous drug abuse, but either way I now cannot obtain a full erection. I can get hard, and have no problem ejaculating...but I don't get rock hard or even hard enough for vaginal penetration. I've had multiple girls ask me to fuck them and I just can't, I hate it. What treatment/pill do you all suggest I take?