In general, emergency contraception works by preventing ovulation (release of egg from ovary), fertilization (egg and sperm fuse) or implantation (fertilized egg getting stuck in uterus wall). There are a few types of emergency contraception—the morning-after pill, Ella (a prescription morning-after pill) and IUDs (intrauterine devices). Most people use the term “emergency contraception” to mean the morning-after pill (like Plan B).

The morning-after pill is only effective at stopping ovulation, which means timing is critical. Plan B works best when taken within the first 72 hours (or 3 days) after unprotected sex (but sooner is better!). Thereafter it is much less effective.

You can get Plan B at any drug store without a prescription. You might have to ask the pharmacist for it but it should be given to you without question. You WILL have to pay for it so I suggest asking your partner to chip in.