Menstruation
(a period) is a major stage of puberty in girls; it's one of the many physical
signs that a girl is turning into a woman. And like a lot of the other changes
associated with puberty, menstruation can be confusing. Some girls can't wait
to start their periods, whereas others may feel afraid or anxious. Many girls
(and guys!) don't have a complete understanding of a woman's reproductive
system or what actually happens during the menstrual cycle, making the process
seem even more mysterious.
When
girls begin to go through puberty (usually starting between the ages of 8 and
13), their bodies and minds change in many ways. The hormones in their bodies
stimulate new physical development, such as growth and breast development.
About 2 to 2½ years after a girl's breasts begin to develop, she usually gets
her first menstrual period.
About
6 months or so before getting her first period, a girl might notice an
increased amount of clear vaginal discharge. This discharge is common. There's
no need for a girl to worry about discharge unless it has a strong odor or
causes itchiness. The start of periods is known as menarche. Menarche doesn't
happen until all the parts of a girl's reproductive system have matured and are
working together.