Will there be any impact to menstrual cycle after taking option 72 pill? After having unplanned sex on 4th day of menstruation I have taken option 72 tablet within 7 hours. After 10 days of it I got withdrawal bleeding for 3 days which is very less. After withdrawal bleeding, now it's been 1 month that I haven't got my periods. I have done pregnancy test as will which showed negative. Please suggest when I can get my periods? I do not have any prior health issues and my periods cycle was always regular which comes at least 4-5 days prior to date.