I took plan b about 2 weeks before my expected period was to come as the condom broke. I had just started taking birth control but was told it would be entirely effective after a month of use. I was only half way through my pack so i took plan b as an extra precaution. I received my period at my regular expected time on the sugar pills. It was a little heavier than normal. i know this sounds soooo stupid but i was just wondering, if i was pregnant beforehand...even before the "accident" would i have recevied 5 days of heaviesh bleeding after taking plan b?