I have been on the pill, lomedian, for about 2 months. I had sex two nights, around my ovulation time, and left for vacation the next day for a week, forgetting my pill pack. I know the sperm can live in your body for a few days, so is it possible to become fertile so quickly after? My breasts have never been sensitive during PMS or anything, but they have been sore for a few days now, so I was a little concerned.