[Lizzie]

It depends on how long it takes for your pill to become effective. It will say so in the information packet that it comes with. It usually takes a fee weeks to a few months for the pill to reach its full effectiveness, but it depends on the type of pill.

Make sure you are not using plan B too often. It is only meant to be used in emergencies. If you are worried about your pill not working just yet use condoms as well until your sure your pill is working.

The only way to know if you are pregnant is to take a test. You have to be fourteen days past the day you had sex to be able to use an over the counter pregnancy test. You can buy a test at most pharmacies or grocery stores and are very easy to use.