Nub theory - any guesses

[LMTx]

Not even sure if you can see a nub but please if anyone wants to take a guess of boy or girl! Xx

Boy

I have 2 girls and now having a boy. Their 12 week scans are all identical! So I don't believe the theories I'm afraid. But I'll guess girl 👧🏼

I’d say baby isn’t perfectly on their back so there is no way to tell as it has to be a perfect side view shot to be able to see the nub

Can anyone guess the gender? 12+1 the sonographer said it was a very clear picture so I’m very intrigued to see what people think 😊