Nub theory?

Paige • 👼 9/3/16 🌈👶🏻 Saige 2/13/19!

14+1 I don't even know how to do the theory even though I've looked it up. It just flies over my head lol. Everyone but my mom thinks it is a boy would love to just have people's guesses who know the theory better. Thanks for your time and congrats if you are expecting!