Any hints about the gender?

My scan was at 13 weeks and our baby was lying on her/his stomach which made it a bit tricky to see much of her/him 😂 The sonographer flipped the picture for us so I guess that’s why it looks a bit funny, I’ve been trying to figure out the gender with the nub theory and the skull theory but I can’t figure it out! We are finding out the gender in 3 weeks but the wait is killing me! I’m soooo eager and excited with each day! 🤩 I’ll appreciate any guesses 🩷