HOW DOES IT WORK D:

So I have recently started on the pill (estelle 35-ED) , and I was curious as to how the pill actually works. Reading through many different websites and the information inside the box states you need to take the active pills for 7 days to be covered for pregancy when having unprotected sex. But does that mean you are likely to get pregnant after you take the sugar pills and get your "period" , since there is a gap in the active pills. PLEASE HELP !