I'm 16 years old and have problems getting and maintaining an erection. This problem has been about for a fair bit now and is very worrying. I've spoken to my GP he says its probably nerves getting to me but I have my doubts about that as even at home on my own I can't get erections as easy as I did before and have trouble maintaing anything useful. I seriously doubt it's a problem with sexual attraction as I love my girl friend very much and think she's gorgeous. Anyone help me out?