Check to find out your fertile timing. For some girls, they can get prego naturally, others have a better chance when they know the times when their more fertile!
Another thing you should do, is go to the doctors office, and have him and yourself checked! You could have a small hormonile unbalance and could get shots for it, or he may have a very low count.
Best of luck to ya hun!!!
(my family is full of nurses, so I know alot about this stuff)