From my readings the chances are slim but I believe it is always worth a try because stranger things have known to happen. You usually only do ovulate for that window of time. I am in the same boat though. My doctor said that you can usually count 14 days from the first day that menstral started and have sex on that 14th day and every other day thereafter for about a week you know 7 days and something is sure to happen. I got pregnant with my son by using an ovulation urine test. It said that I was and I had sex right then and I got pregnant but I know the next time it will not be that easy.