Can someone explain the Ramzi Theory?

Leyana • 💍 Wife & Mother 👦🏽👼🏽 👶🏽👼🏽

I’m not going to lie, I’ve done minimal research on this because I’ve never had the opportunity to put it to use in my pregnancies. Could someone explain it to me, like the “for dummies” version? Lol we just got our first ultrasound for baby #2 yesterday and since a lot of our friends and family are already putting in their guesses I thought it’d be fun to see what you guys think: