An added benefit of having the Paragard coil is that it serves as long-term contraception as well. This can be inserted up to five days after unprotected sex as well, and at more than 99 percent efficacy, it is in fact your safest bet. The Paragard intrauterine device is another option at your disposal.
Studies have shown that “ella”, another emergency contraceptive pill, can be effective up to five days after having unprotected sex. Have you had unprotected sex but have 72 hours already passed? You still have options. What If It Has Been Longer Than 72 Hours? In terms of its mechanism of action, Plan B can delay or prevent ovulation as well as prevent the implantation of any already fertilized egg into the uterus.
As such, it should never be relied on as a main source of birth control, however, because accidents do happen and Plan B is more effective the sooner it is taken, women of reproductive age may consider having the morning-after pill in their personal medicine cabinet at all times. Plan B is also less effective than the regular birth control pill. That is, statistics show that this “morning-after pill” is 95 percent effective if you take it within 24 hours, a percentage that drops to 89 percent if you take it within 72 hours. Don’t make any mistake about this, however: the sooner you take Plan B, the more likely it is to be effective. Plan B One-Step is a very popular kind of emergency contraception that protects against pregnancy if you take it within 72 hours of having unprotected sex.