You should go see your doctor. There are some things that can be easily taken care of. Wouldn't you rather know that there is a problem and how to fix it than just continue to wonder month after month if it will ever happen.
You can have some tests run by a regular doctor - blood work testing for ovulation, sperm assessment for your significant other. A regular ob/gyn would be your next steps for further testing.
I tried for a year and a half with my first and all it took was a couple of rounds of provera and one of clomid and then I was pregnant.