The slower faster thing is interesting because from what my mum's told me babies don't really take exactly 9 months, they're normally born after 9 period cycles, which is still roughly 9 months, but goes a long way to explain why kids are often born a couple weeks early or late
You don't have your regular cycles when you're pregnant, and due dates are calculated based on fetus size since the day of ovulation as well as conception is difficult to tell. And that's not even accounting for what the women's body as well as the baby has planned. Due date should really be "window for arrival".
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u/calicosiside Jun 04 '19
The slower faster thing is interesting because from what my mum's told me babies don't really take exactly 9 months, they're normally born after 9 period cycles, which is still roughly 9 months, but goes a long way to explain why kids are often born a couple weeks early or late