So, the pull out method isn't great. You can definitely get pregnant doing this. The penis will emit small amounts of semen during intercourse. The whole time. I don't know the statistics but they are probably low. But still, not a good practice at all if you are hoping to prevent pregnancy. I wouldn't worry 'too' much. But you have two options. Plan B right now if it is within 72 hours or less or wait 2.5 weeks. You can test at that point whether you get your period or not (periods are often late and often they are around the holidays as schedules are disrupted which whacks out our hormones.). Again, I wouldn't worry 'too' much at all. You probably aren't, but it can't be ruled out.