12 week scan slip up ?

I dont get it what did she do

You cant tell at 12 weeks, not with enough certainty anyway. Nost ultrasound technicians just have a preference instead of saying "it"

Ive had to have specialist scans at 14 weeks with both my pregnancies and I asked at both, he said he can tell but it's not accurate nought that he's willing to tell me.

Most technicians say he or she as not to say it.

Depending on how many days you are even if they could see the nub a nub can rise until 12+5 anyway x

I had this at my 12 week scan, the tech kept saying he. Example: "he's an active baby" turns out at my 20 week scan it is a boy. As others said they can't tell at that point with 100% certainty, it might be just how they address the baby unintentionally

In my 12 weeks scan the technician referred to my baby as "she", i didn't think to much of it bcs maybe that's how she prefers to refer to them instead of "it". 20 weeks scan informed it was a girl so maybe she just went with her gut by looking at the nub? I dunno

Mine said she loads of times, I have 2 boys! I also didn't find out till birth both times X

This happened to me at my private NIPT. She kept on saying "he" as my baby didn't want to face us and she was getting a bit impatient. Then she said she called him "he" and that she doesn't know the gender. But my baby was a boy so it took away the surprise element. I wasn't happy!
If baby was a girl then she would need to be very sure. Sometimes boys are more obvious that they are boys.