Nub theory from bottom shot

[alita7]

So you can't really see the nub on the pics I have, I thought it looked like a girl nub on screen though.
She showed me the bottom (as I asked about the nub which she hadn't heard of) which showed two clear lines nextish to eachother. Does anyone know if that is the nub from a different angle- in which case I would assume it's a girl nub - like the split in two girl nubs (which is how it looked on screen) or is it the poo bit?

As far as I know, the nub shot needs to be taken side on.
Was it your 12 week scan? The pics I've seen of girls later on from underneath have 3 clear lines together.

I've just had a gender scan and was shown the 3 lines to show its a girl. My sonographer had predicted a girl by looking at the nub at my 12 week scan it was completely parallel with the spine

yeh it was the 12 week- the nub looked parallel and kinda split in two on the screen but its not clear in the pics I have. Just wondered if you could tell from the bottom as well :)