Nub theory, can’t see nub?

[EMRJ]

Hi,

I had my 12 week scan today but it was technically difficult and not great pictures. I’ve been asked to come back again as baby was proving hard with measurements.

I'm just if anyone can point out the nub in this picture and theory on gender?

TIA

It’s the white line you can see in the first two pictures at the tail end of the baby at the top if his body.

it’s not great quality/position though. Not sure if I’d hazard a guess