Like the other girls said, no that doesn't mean your infertile.
You have to remember that every act of sex doesn't result in a pregnancy.
From my understanding, we release an egg once a month, mayb your not
having sex the days you are fertile. Everybody doesn't ovulate on day 14.
I ovulated between days 7-10 and I have a 2-year-old daughter now!
So don't give up your hopes and the number one thing, relax! That can mess up your chances, when your stressed.