My period was to take place on 6th of this month.i took period delaying tabs on 5th,7th and 9th and on 9th afternoon i had intimateship but didinot loose my virginity.still i took a pill on 12th morning.on 16th i took a home pregnancy test and it came negative.from few days my stomach pains as if menstruation will take place but its not happening.please suggest.