Menstruation, also known as a period or monthly, is the regular discharge of blood and mucosal tissue (known as menses) from the inner lining of the uterus through the vagina. menses and sex.
Menarche (first menstruation) age in different countries at different times (secular trend), menses and sex at mum.
The first period usually begins between twelve and fifteen years of age, a point menses and sex in time known as menarche.
Women’s periods menses and sex have been tied to the moon and the lunar cycle for literally thousands of years.