Maybe. After you take an emergency contraception pill, your next period may come sooner or later than normal. Most people will get their period within a week of the expected date. Your period also may be heavier, lighter, spotty, and more or less painful than is normal for you.
If you do not get your period more than one week after expected or if you think you might be pregnant after taking emergency contraception pills, take a pregnancy test to find out for sure.