Okay, I posted this info in response to a question on vaginapagina, but I'm putting it here too cos it's information every female should know - and have on hand (for themselves or for a panicking friend): emergency contraception.
You DO NOT need to go to see a doctor or pharmacist or planned parenthood or the no-hassle clinic (although the latter 2 especially are great) if you don't want to - if you have access to a pack of regular birth control pills - yours or a friend's.
The so-called morning after pill is in fact a series of pills that are IDENTICAL to ones found in regular pills. I'm not just guessing, this is medically accepted knowledge.
this page has what combination to take and when for about a dozen different kinds. You can find similar info by putting "emergency contraception" and "regular birth control pills" together into google, but of course, make sure you check out the site the info is coming from. This page is a source with a spotless reputation.
Emergency contraception is by no means fun - if you've ever mistakenly taken two bc pills in the same day you'll know how sick it makes you feel. And OBVIOUSLY you should have a well thought out birth control plan already. AND OBVIOUSLY there are few cases in which you shouldn't be using condoms TOO, anyway. But accidents or assaults do happen. Be prepared.
More cute animal pictures later, I promise.