Emergency Contraceptive Pills (ECPs)

Do ECPs disrupt an existing pregnancy? Top
No, ECPs do not work if a woman is already pregnant.  
Do ECPs cause birth defects? Will the fetus be harmed if a woman accidentally takes ECPs while she is pregnant? Top
No, good evidence shows that ECPs will not cause birth defects and will not otherwise harm the fetus if a woman is already pregnant when she takes ECPs or if ECPs fail to prevent pregnancy.
How long do ECPs protect a woman from pregnancy? Top
Women who take ECPs should understand that they could become pregnant unless they begin to use another method of contraception at once.
Should women use ECPs as a regular method of contraception? Top
No, nearly all other contraceptive methods are more effective in preventing pregnancy. A woman who uses ECPs regularly for contraception is more likely to have an unintended pregnancy than a woman who used another contraceptive regularly. Still, women using other methods of contraception should know about ECPs and how to obtain them if needed, for example, she may need them if a condom breaks or if she misses 3 or more combined oral contraceptive pills.