Trying but not trying to hit ovulation every cycle.

Me & My Husband have been trying to conceive for 2 years on and off but we've never really kept on each cycle and ovulation until now. I'm scared that I can't get pregnant because we have been trying or not preventing for 2 years with no luck but on the other hand I think that if we continue to try each cycle and hit ovulation for the next year we should have better luck. What does everyone else think!