Nub theory?! Help me find the nub!

[Jumblebee]

I've been reading about the nub theory and the skull theory and trying to decide on my own scan picture but I'm absolutely lost. I cannot see a nub

My gut feeling is a boy, but if what I think may be the nub IS the nub then it seems to suggest girl?

We will be finding out in 3 weeks but just wanted to have a bit of a guess until then second picture is Baby slightly turned away, I'm not even sure if you can see anything?

I think a boy purely from its nub sticking up slightly and the skull looks very squared x

Thanks @Roxx1516 I had thought that about the skull!

Am I being stupid in that I'm not sure that the nub is what I think it is? I'll try and edit a picture to circle it or something and add tomorrow but I've no idea if I'm looking at the right thing I don't have too long to wait (if this one compromises, DD didn't at her 20 week scan!) but I'm so excited!

Google nub theory and it will show you exactly what your looking at :)