Never Started Menstrual Periods

Welcome to our Decision Guide.

The purpose of this guide is to provide understanding and advice to women who are concerned because they have never started menstruating. The absence of menstrual periods is called amenorrhea. If a woman has never had any menstrual blood flow by the age of 16, doctors call this primary amenorrhea.

Through a series of questions, you will learn about the more common possibilities to explain your personal situation. The guide should be used as a complement to the care you receive from a health professional. It is not intended to replace direct interaction with your doctor.

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A women's first menstrual period, called menarche, happens around 12 years of age. However, it can start as early as age ten or as late as age 16 years.

Are you older than 16?

Yes, I am at least 16 years of age.

No, I am not 16 yet.

It is likely that you will start menstruating within the next year or two. Even though you may have never had a menstrual period, pregnancy always needs to be considered if you are sexually active.

Are you or have you been sexually active, that is, have you begun having sexual intercourse?

Yes, I have been sexually active.

No, I have never had sexual intercourse.

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