Hii 29,Sept is my due date for my period, My period is running late on my due date , I am not getting period till 6 of Oct , as of some reason I took Premount N on 7 and 8 the of Oct three times a day ,, today is 12 of Oct still period don t start ? I have checked pregnancy test on 7th of Oct it s negative then I took to delay the period,, What should I do to start period again ?