Ovulation is when an egg is released from your ovaries to be fertilized. Menstruation, or what is commonly referred to as your period, is the bleeding that occurs after ovulation, if you don't get pregnant.

Does menstruation involve ovulation?

Ovulation is the release of a mature egg from the surface of the ovary. This usually occurs mid-cycle, around two weeks or so before menstruation starts. During the follicular phase, the developing follicle causes a rise in the level of oestrogen.

Is ovulation before or after Menstration?

Ovulation happens about 14 days before your period starts. If your average menstrual cycle is 28 days, you ovulate around day 14, and your most fertile days are days 12, 13 and 14.