Everyone's different: I would say over a week seems to be the longer end of a period. That being said, it could certainly go on longer, but there are usually some hormonal issues that are going on underneath. At 16, you seem a little late to be having your first period, but not unheard of. Certainly seeing a gynecologist could help better answer this further.
Answered 8/7/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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