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If an egg has been fertilized (conception), and you take the pill, the pill will work to prevent the egg from implanting in your uterine wall. IF THIS HAPPENS, AN ABORTION WILL OCCUR, because the egg has already been fertilized. The fertilization of an egg can occur as early as 15 minutes after intercourse.[6] The fertilized egg contains all 46 human chromosomes. These chromosomes are the complex genetic design that will determine the hair, sex, eye color, skin tone and height of a child.[7]

If the Morning After Pill is taken after the egg is fertilized, the egg may not be able to implant because of the effects that the hormones in the Pill have on your uterine wall. If these are the circumstances inside your body when you take the Morning After Pill, the Pill is "not a contraceptive; it's a very, very early abortifacient drug."[8]