Plan B, also known as the "morning-after pill," is a popular option for emergency contraception after unprotected sex. It is available over-the-counter at most pharmacies and can be taken within 72 hours of unprotected sex to help prevent pregnancy. It works by delaying or preventing ovulation, preventing fertilization, or interfering with the implantation of a fertilized egg. It is important to note that emergency contraception is not 100% effective and should not be used as a regular form of birth control.
