Whether pregnancy was nine months or forty weeks was a true point of contention with my husband, Cameron, and me.
He legitimately thought I was crazy every time I spoke of our due date because it wasn't nine months after our estimated date of conception.
It was only after several months that he got SO frustrated that he breached the topic and we ironed this mystery out.
From that experience (and a few more) it was evident that there were some grey areas around pregnancy that might need a li.