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About every 4 weeks, a girl that is able to become pregnant has her period.
In front of this period, her body gets ready to attach a fertilized egg in the womb.
As the egg wanders down and is not fertilized, it will not attach.
When the body realizes that the egg did not attach, it gets rid of all preparations for the possible child. This is the actual period.
After the period, the cycle starts again to prepare for the next egg.
It is sort of a cellular safeguard, making sure that the conditions met for each egg is optimally safe and secure.
A crude explanation but mostly to the point.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agowhy do girls have period's?
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