Blood caused by the sloughing of endometrial cancer. There are two types of hormones Estrogen and Progesterone controls the formation and sloughing of the lining of the uterus. Hormone levels, both of which are associated with ovulation in the ovaries. Each month there will be a period of about 26-30 days, depending on the individual. The period Occurs 1 time per month.The blood caused by stripping of endometrial hormone and two types of Estrogen Progesterone control building and peel of endometrial The hormone levels, both have relationship with ovulation from the ovary.26-30 days, depending on the individual. The monthly average month occurs 1 times.