Hi i am 24, and i had unprotected sex with my bf 2nd day of my period( march 2). I all knew before that having sex during mesntruation is safe but later the day after we had intercourse i learned from my friend that it is not. We are not ready yet to have a baby, thats why we research on emergency pills because plan b pills are not available in the philippines, we read about nordetter, so i bought it, but after i took the first 4 pills (march 3, 10:00pm) its only then i knew that the pills have expired 12-2013 and that day was march 3, so we got really paranoid, so the next day march 4, i went to a OB and she gave me another set of nordette to be taken, but she told me to take 3 pills instead of 4, i take the 3 pills 1:30 pm and had another 3 1:30 Am... well im really nervous and paranoid if il get pregnant or not.. please help me... is the 3 pills effective?