... when I took the red pill instead of the white one. Only realized what had happened the next day. I took the pill I had missed and the next one at the correct time. I was wondering could this have created room for ovulation and possible pregnancy as I did have sex that night,though the withdrawal method was used. And what us gona happen at the end when I am 1pill short. (The pill that will be missing is my last 1) Thank you.