You can change your cycle by using hormonal contraception, better known as birth control pills. To change the date you will bleed, you can start taking the birth control pills before you get your period, although it is not recommended for protecting against an unwanted pregnancy. Menstruation is due to decreased evels of the hormones estrogen and progesterone in the blood. Those hormones are produced by the yellow body in the ovaries. The yellow body persists for about 14 days. When the yellow body disappears, the hormone levels drop and menstruation occurs. If you take hormones orally, the drop in the hormone levels is prevented. The next menstruation, or period,will be delayed until you stop taking the pills. This artificial period delay using hormones shouldn’t be done very often because it messes up the cycle and can cause unexpected uterine bleeding.
You must consult your gynecologist before doing this!!!