How to delay a menstrual cycle?

How can you delay or make your menstrual cycle come early?

You can only do this on hormonal birth control and even then you don't really have control. To delay it or make it sooner you have to change your level of estrogen and progesterone. (lots of women skip their periods on purpose on the pill, different pills offer minimal menstrual cycles ex- Seasonel is only 4 periods a yr, Lybrel is no periods a year etc.)

hi I'm also wondering this. it's a big problem when you have exams or something important and you know its going to ruin everything because of the pain. stress does affect your cycle, but I think it can vary in it's result. if someone does knoe some way without taking the pill or anything destructive like that, can they please share. periods are a pain.