You took every precaution. You followed every direction that was printed on the box of the contraceptive of your choice. Some of you even used two methods of birth control, but it still happened -- you got pregnant -- or so you think. Now your period's late, your breasts hurt, and you've been throwing up like a frat boy.

Do you freak out and warn your folks that they might become grandparents? Or do you wait it out just in case this is all just a false alarm? If you're like most people, you're...