Plan B contraception, also known as the morning after pill, is used to prevent pregnancy in women who didn't use birth control or the birth control failed. The Mayo Clinic reports that its use is generally safe.
Basics
According to the Mayo Clinic, it usually takes a few days for a woman to become pregnant after having unprotected intercourse. This pill works to prevent the release of the egg and reduce the ability of the sperm to reach the egg.
Types
There are two different Plan B contraceptives. One contains the hormone levonorgestrel and the other contains two hormones, progestin and estrogen.
Considerations
The Mayo Clinic reports that the morning after pill should be taken within 72 hours of having unprotected sex. However, the University of Illinois at Urbana-Champaign reports that it can be taken within five days.
Access
Women 17 years old and older can obtain the morning after pill without a prescription. If you're younger than 17, you'll need to consult with your doctor.
Side Effects
Plan B can have negative side effects such as vomiting and nausea, fatigue, headaches and dizziness.
