welcome, thanks for consulting.,
you are having heavy bleeding per vagina since one week, after an unprotected sex and taking emergency pills there after.
having continuous heavy bleeding per vaginum is very dangerous. you may have anemia
, weekness, and other severe consequences and side effects .
kindly go to a gynecologist as soon as possible, there might be some vaginal tear which can not be visualized by you.
do take your condition seriously.