i had my period last month on the 3rd of august 2012 . within this same month, i had malaria after the period ended, and i was given a drug called lonart ds. within this same month, thus august 2012, i had unprotected sex on the 22nd august 2012 and took postino2 after 24 hours. i should have had my period now but its not in yet. am i pregnant or is there a complication.