Q: Doctor um 21 years and i have not experience my period since from birth is it still fine or I should visit a doctor?

Dauta Doctor: Periods, or menstruation, usually start at about the age of 12-14. It has been known to start as early as 9 years of age or as late as 16.

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The timing of periods are dependent on many factors including heredity. If you have not had your periods at the age of 21, you should definitely consult a doctor. There are hormonal imbalances that can cause this condition and it is better to correct them at the earliest.

There are many other reasons as well and only a complete examination and some tests can diagnose your problem.