I'm 18 years old and have just recently become sexually active for the first time. After my girlfriend and I's first few times having sex, I have had a tremendous problem getting a solid erection and comeing during both sex and oral sex. Its quite embarassing, as my partner is older than me and has had a few other partners.
Its not only during sex that I have trouble becoming erect. I used to consider myself a pretty horny guy, getting an erection at several points throughout the day. But now, I even have trouble masterbating using the methods that used to get me off in a few minutes. When I finally do get myself off, there is very little discharge.
Is it possible that something happened physically or psychologically during our first few sexual experiences to make this happen to me?
I'd bet money it's all between your ears!
Never underestimate the impact of stress on your mind and body!
I think you need to just relax and not put so much pressure on yourselves!
I'm sort of new to sex too, but I think I have the answer to your problem. I noticed when I went from 0-6 times a day with my last girlfriend, I just didn't get random hard-ons and such and the only thing that could help me out was her "being sexy". I noticed that made me a little more comfortable with sex. When you're in the mood or she let's you know she's in the mood, have her wear some Victoria secret or something. If that doesn't work, maybe if she teased you with her tongue or hands. I find that personally the easiest way for me to get horny is my partner showing me that she wants me bad. My advice is try different things, find out what turns you on and encourage your partner to do it.