Don't know your age?: Menarche usually occurs between ages 11 & 13 in the US. However for some their period could start as early as age 9 & for others not until 16. If you are underweight be aware that usually you need at least 17% body fat to menstruate. So healthy weight can be a factor. Take care.
Answered 6/25/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
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