Dear Tennisstar,

Periods usually last from three to seven days. Sometimes the length of a girl's period changes from month to month, and that's normal.

It can take a while for a girl's body to adjust to hormone changes and begin to "run" smoothly and regularly. She might have a light flow or a heavy flow, the length of the flow may vary, or her periods might be late. She might even skip some months. Usually, a young woman's periods and cycles become more regular as she grows older.

Hope this information helps!

Take care,

teenwire.com^® Editors

This column is for informational purposes only and is not intended to constitute medical advice, diagnosis, or treatment. If you have a medical problem, please call toll-free 1-800-230-PLAN for an appointment with the Planned Parenthood health center nearest you.