I'm 21 and i'm having trouble getting erections. I don't always wake up with "morning wood", maybe only a third of the time. Up until recently I used to excessively watch pornography. Could this be causing it? At this age I should be able to achieve erections easily and just can't understand why I'm not getting them. I also have an odd way of masturbating/ejaculating. I do it while flaccid. Just rubbing the head of the penis with my thumb. Could this be harming me?
Could this be ED? It always seemed like a old guys issue.