Its possible, did you follow the directions carefully for the morning after pill (taking it within the time frame suggested). Also stress can cause period to be late. I would give it maybe a week of your period being late and then if it still doesn't show I suggest you take a home pregnancy test. FYI Please never let anyone pressure you into doing anything! Losing your virginity is something you cannot get back. And something so special should never be shared with someone under thise conditions. All the best to you