Skull theory at 9 weeks??

[Mannie89]

Is it possible to predict the gender of baby at 9 weeks with skull theory? I know no gender prediction is 100% positive without a gender scan but I still have 5 weeks until I get mine! I'm getting antsy! Haha. The last scan I got was at 9w2d.

 

[Mannie89]

Here's my last scan pic at 9w2d just incase!