Good Evening Doctor, I Took Postinor 2 Tablet On The

good evening doctor, i took postinor 2 tablet on the 2nd and 3rd of march after sexual acts. i took two tablet at the same time. uptil today i have not seen my period...i have been feeling as to vomit, serious headech and my breast paining me. i have seen a drop of an adnormal discharge twice but no menstration.. please what is happening