Nothing, I just don't envy getting pregnant after forgetting to take the pill.
I'm not entirely certain it works that quickly. Although, PP's mom says that he's the result of one missed pill. I'm not sure how much I really believe that though... Especially if the woman resumes taking the pill while unaware of the pregnancy. I would think it would almost be like taking the day after pill but I don't know.
No, clearly you don't know.
The pill is oestrogen. The female hormone. It is a steroid. It doesn't build muscle like testosterone, but it does change your biology so that you are infertile. Its such a shock to your system that your body does not ovulate properly. However, should you stop taking the pill, you release an egg and you become fertile. If this happens in one day, you'll get pregnant. Extra pills afterwards are not going to undo or take back that released egg. You will remain fertile until your next period. So if you forget in week one, you might still get pregnant in week 3 of your cycle.
The fact young women are taking these powerful drugs and don't understand them is fairly frightening. The amount of life that must be destroyed as a result later is stomach churning. 25% of all pregnancies end in termination.