How many weeks does a pregnancy last?


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Pregnancy An average pregnancy lasts for 40 weeks. Thanks for asking ChaCha!

Answered by Cindy H. -

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The average length of human gestation is 280 days, or 40 weeks, from the first day of the woman's last menstrual period.

Answered by Evan P. -

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A pregnancy is 40 weeks, which is 10 months. A person starts counting from their last menstrual period which makes it longer.

Answered by Marjean M. -

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