How effective is the morning after pill 4 hours after sex?
If you take the morning after pill 4 hours after sex then the chances of becoming pregnant are very remote, but not impossible. The morning after pill may mess with your cycle abit, but don’t automatically assume you are pregnant if your period is late or light, but then don’t take it for granted that you are not. If your period is late then you I would recommend taking a test. As with all contraception there is no guarantee one way or the other.