1 yr with the pull out method and I never got prego

My boyfriend and I have been using the pull out method only during my fertile window otherwise he's gone inside of me every other time. As of yet we have not gotten pregnant. We just now decided to stop pulling out and my fertile window starts next week. Is it possible that after a year of the pull out method and not getting pregnant that I can during my ovulation time? I feel like I can't because I figured it would have happened already. We have sex a few times a week with a few oops during my fertile window where he didn't pull out at the right time. Previously I was on birth control for 14 years. Primarily the pill. Would that have anything to do with it? Just want to know what my odds look like. So I know if I should or should not get my hopes up.