"Plan B works like other birth control pills, primarily by preventing ovulation."
Think about that statement. This is touted as the "morning-after pill."
A woman ovulates at certain times. (You knew that) A woman can only conceive during monthly ovulating days. The morning after pill can't stop something that already took place, ie, ovulation. The wording here is carefully twisted to say that it can't prevent pregnancy.
It says that it can't affect a pregnancy after a woman is pregnant. Their definition of pregnant is after the egg has implanted into the uterin wall and is growing. Our definition for pregnant is the instant the sperm enters the egg and splits. That's far before it starts down the path to their definition of pregnant. This pill stops that fertilized egg from implanting; hence their definition of being pregnant.
Ovulation is NOT fertilization.
So you're opposed to the Pill too. The birth control pill. Glad you aren't in charge. That's all I have to say.