When we were trying for our first we tried for almost 15 months. It was awful and I can totally sympathise with you.
I do agree with Kathryn after a year start the process of getting it checked out. We had started the process and I ended up needing a laproscopy. While recovering from the op we stopped trying and lo and behold I fell pregnant.
Think the advice I can genuinely say is don't try
Good luck chick, remember we are here if you need a shoulder to lean on