I am on yaz, and always take my last active pill on a Tuesday and start a new pack on Sunday. Whenever I take my last active pill on a Tuesday, I start my period on Sunday, the same day I start a new pack. I am scheduled to take my last active pill Tuesday, the 13th, which would mean I'd start my period on Sunday, the 18th. However, I will be on a cruise, and would like to delay my period so that it will start on Tuesday, the 20th. I am not interested in skipping my period completely this month...I just want to delay it by two days. I know i could delay it by taking two more days of active pills (of which I do have extra), but in order for this to still be an effective form of birth control, could I still start the new pack on Sunday, the 18th? So if I only take 2 days of placebo pills, would it still be effective birth control? If not, how should I do it?