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I'm not sure what you mean.

Ideally, when a fertilized egg attaches to the uterus,

there is no menstrual bleeding.

Hormonal changes prevent this from happening.

If you are referring to the "bleeding" that facilitates the exchange of nutrients,

as in through the placenta. It takes a while for a placenta to form

and then the exchange of nutrients continues until the baby is born.

If you are bleeding (menstruating) then you probably are not pregnant.

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16y ago

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