Can anyone use the theory to guess the sex?

Question

I see some people using a theory on the ultrasound, can't remember what it's called, does anyone know?

Answer

Girl🎀

Answer

Girl by skull theory 👶🏼x . No nub to see though

Answer

Something about which side the placenta is on..

Answer

I say girl

Answer

Girl by skull theory as I don't see a nub to go by nub theory 💗

Let's Glow!