Have I been doing nun theory wrong?

[PurpleGuppy]

Just had our 12 scan today and they gave us their predicted sex of the baby according to the nub.
I've guessed quite a few right in the past and I would have thought the opposite sex to what they said. So, interested to see what everyone else guesses and wondering whether if being doing it wrong all this time.
(I do realise it's not an extract science and she did stress she wasn't 100 percent sure as it's too early)

Circled

Of course - thank you!

Correct me anyone if I’m wrong but this is what I’m going by. I think this is what we’re looking at.
And going from the angle of the spine, this is definitely pointing up x

Ah, ok - I thought it was one of the more prominent ones underneath it. Thank you

The lines below I think are too low to be the nub. But I’m not an expert.
Come back and let me know though, I just got all 3 of my friends correct who are due in August. X

Had our scan today and we're having a girl! Thanks for all your guesses

Awww that’s lovely. Congratulations. I love an update x x