If I remember correctly, Plan B stops the walls of the uterus from being able to accept a fertilized egg, hence the limit time of use as it might take a few days for the egg to travel down the fallopian tubePlan B prevents pregnancy after unexpected creampies, but i think there is a time limit. IIRC you have afew days tops to take a Plan B and this would prevent pregnancy. It's borth control just like the pill, patch, shot, IUD, condom, etc etc. It stops a pregnancy from starting so it isn't aborting anything.
Unless you use the argument that all BC is abortion in some form, which is crazy talk.
I've read everyone's point on this, and I've changed my mind. Abortions are fine, go nuts. I can't think of any reason to deny them...in retrospect. Except.....
I remember my gf (now wife) having super crippling anxiety over getting pregnant. She wanted a life outside of motherhood and knew that unexpected children would destroy that. I just get to ignore all those issues