HI Doctor, My partenr s normal period date is 06th of every month,but we had a intercourse on 15th ,within 48 hours i.e 17th night she had unwanted 72 pill .after 6 days of having pill she got her period for 4 days.Now already 27th,but the period yet to come.Is this normal or do we need for pregency check?Please help out of this..