The sonographer at my 12 week scan told me that he was 98% certain that my DC was a boy. As indeed he turned out to be. The sonographer - actually a consultant obstetrician - explained that although at that age boys and girls appear to look the same, the angle of a tube that will become the genitals differs between the sexes. If it's angled at more than a certain number of degrees (I'm afraid I've forgotten the magic figure) away from the back then it's more likely to be one sex (again, I forget which - [blames ongoing pregnancy brain]) and if it's less than that number of degrees then it's more likely to be the other sex. I guess it's an imprecise science (and I have no idea how anyone assesses the angle) and the doctor did also say that a 12 week old foetus identified as a girl was more likely to turn out to be a boy than vice versa.
at my 11 week dating scan was told 'I have a suspicion it's a boy'.
4 days later, at my nuchal fold scan, was told I was not 11 weeks, but 12+5 and it was too early to tell what sex!
So, in my heart I think it's a boy. But trying not to think too much until 20 week.
Apparently there is a 'nub' on all boys and girls at that stage which look the same. but if it's a flat nub it's most likely to be a girl and if it's sticking out at 30 degrees or more in relation to the spine, then it's more likely to be a boy.
Due to previous problmes my scan was done by consultant obstetrician who I knew well and he told me 100 % at 12 weeks it was a boy
The midwife was shocked and said you cant say that its too early to tell. He giggled and said .. I'm an expert .. its a boy and showed her what he was seeing on the scan. She just laughed and said .. aye aye aye .. its too early to tell.
I had soo many scans after this and at everyone consultant said its a boy.. and he was right.