Why do we calculate the length of a pregnancy from the first day of a women’s last period? 1.28K viewsJanuary 1, 2024 Question98.99K April 15, 2023 0 Comments Why do we calculate the length of a pregnancy from the first day of a women’s last period? In: 3216 69 Answers ActiveNewestOldest Anonymous Posted April 15, 2023 0 Comments I’ve got a different question about pregnancy. If average gestation period is 40 weeks, why does everyone say human pregnancy is 9 months? 40 weeks is 10 months. You are viewing 1 out of 69 answers, click here to view all answers. Register or Login
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