13wk scan today any guesses?

[Jenjen85]

Had my 12 week scan today and was a bit further than what I had myself at. Turns out I'm 13wks and due 31st August not 4th September like I first thought any guesses as to what the sex maybe? I can never tell what the nub/theory is

Guessing boy but I'm terrible at nun theory! So just a guess!

Nub*

Boy based on the shape of the skull.. Boys tend to have squarer ones!

I was also thinking boy due to the shape of the skull