20W and 13W ultrasound images, girl or boy?

Hi everyone! First time mum here, curious to know whether you think my little squirrel is a girl or a boy. One is from my 20 week scan ( the image in which baby looks bigger) which was done this morning, the second is my 13 week scan. I’ve been reading about the nib theory, but I don’t see a nib in either image.

Excited to hear feedback :) Have a beautiful day x

I don't see a nub in the 13 week pic. Do you have a 20 week potty shot?

Unfortunately not. The person doing the ultrasound only took profile shots and I only had a very short time to see the baby :(

Anyone else would like to give it a shot?