Suggest Remedy For Delay In Period

Hi my mensus cycle last was the first week of January. Then in the first week of Feb around 2nd I was already late with my periods n I had unprotected sex . though after 60 hours I took ipill that is on 5th . and then after 5 days that is on 10th I started my meprate course one tablet a day for seven days till 17th . its been 5 days I m still not down. What should I do???