100 million 100 million women worldwide currently rely on the pill as their primary method of contraception. Source: netdoctor

"The best contraceptive is the word no — repeated frequently"

Margaret Smith Emmy Award winning standup comic, actress, writer and producer.

How does menstruation occur?

"Menstruation or sometimes referred to as periods is the monthly flow of blood from the uterus through the vagina in all girls.  During your menstruation cycle, the eggs in the ovaries mature and the lining of the uterus thickens to…"