Nub theory? Gender guesses?

Question

Any gender guesses? Is there even a nub in this picture? I'm not really sure what I'm supposed to look for! This is from 10 weeks.

Answer

Boy

Answer

I can't see a nub but skull looks like boy

Answer

This is a more recent photo 13 weeks of the side profile. I'm super new to skull theory too!

Answer

Boy

Let's Glow!