If you get a period after you take the morning after pill does that mean that you are not pregnant? Will I get my period at a different time of the month then too? Is there any other way of knowing if the pill has worked?

If I don't bleed after I take the pill does that mean it hasn't worked?

Why do you believe you have to bleed?

First you may not have even been pregnant in the first place.

It will also have effects on your monthly cycle.

Plan B/Emergency Contraception - McKinley Health Center - University of Illinois