I tried for 11 months and then went to an RE, it only took 3 trys after that, you may just need to take Chlomid or Femara. My only regret is that I didn't go sooner, I could have saved a year of ttc misery, plus I could have been on the second by now ;-) Get some tests ran, it could be hubby or you and it could be something minor!
I'd go see a reproductive endocrinologist (RE). They can go over so more options for you. I think it would make u feel better.