Early Pregnancy & Birth Control: Understanding 'Morning After' Pills

Question
I heard that if you take an entire month's birth control pills at one time it can terminate a very early pregnancy.  Is this true?

Answer
If you take merely two birth control pills and then repeat in 12 hours, it will terminate an early pregnancy by preventing implantation. This is the basis for the "morning after" pills such as Previn and Plan B. You should NEVER take an entire month's birth control pills for any reason.