I've been experiencing problems with erections for over a year now. I am able to achieve an erection and ejaculate and feel no less aroused than normal, my erections simply are not firm enough to actually have sex. I have noticed that if I abstain from masturbating for a week or more then I am able to achieve a firm erection like I used to but so far this seems to be the only solution - and one that only works for my next couple of erections anyway. I am only young (I'm 21).