Sq - interesting viewpoint - one I hadn't considered. I'm not up on the latest pill facts but does the pill actually "abort" the fertilized egg or prevent the fertilization in the first place. I was under the impression it was the latter.
The pill aborts a fertilized egg by tricking the female body into believing that it is already pregnant. The pill changes hormone levels to match those during pregnancy which then does not allow another fertilized egg to implant and grow in the uterus. The morning after pill is a basically a one time heavy dose of the same pill that also prevents implantation of a fertilized egg into the uterus.
Fertilization normally takes place in the fallopian tubes, from their a blastocyst has to makes it's way to the uterus where it must implant if it is going to develop any further.