Morning After Pill
Description: A combination of oral birth control pills that must be taken within 72 hours after unprotected intercourse.
How to Use It: Pills are available by prescription. Take the first dose of pills (usually 2-4 pills) and after twelve hours take the second dose of the same amount. The pill prevents the egg from being fertizlized.
Advantages: An effective back up if your primary contreceptive method fails, or good emergency option after unprotected sex.
Disadvantages: Can cause some nausea, headaches, or vomiting. It may initially cause irregular bleeding and/or heavier periods. It does not protect against STDs. Don't use it if you are pregnant or allergic to the pills.
How or Where to Get It: Available by prescription only from a clinician. Planned Parenthood and most clinics will prescribe them. You can order them in advance, and have them on hand should the need arise. For a provider near you, visit this site.
Costs: $20-$25 depending on where you get the pills.
To read the rest of this article visit: http://sexuality.about.com/cs/contraception/p/morningafter.htm