Why do moms who are having boys their bellys are shaped like a football? Or maybe that's just my…

Why do moms who are having boys their bellys are shaped like a football? Or maybe that's just my belly? 😂 my belly is literally so pointy and looks like a football. I seen some moms on here who's bellies look just like mine and they are having a boy too. 😂😂 I know everybody is different and every mom is different but it's just crazy.