Normally, the policy is, if they say 100% it means they are absolutely certain beyond a shadow of doubt. Otherwise they tell you what they 'think' the sex is, but warn you not to buy pinks/blues just yet.
In my case, it's a little confusing. Saw a radiologist who at 24 weeks confirmed the sex of the girl, but said other baby had legs crossed. Two weeks later, same radiologist said second baby was definitely a boy.
Week 28, my OB confirms sex of the boy, but says the other baby's legs are crossed so cannot say.
At my 32 scan, the hospital sonographer said she was 100% sure one baby was a girl, but couldn't tell us the other as 'legs were closed'.
So, I'm taking it all at face value at the moment. I think we are having a boy and a girl, but there is also a great posibility we are having two girls (in my opinion). So will have to wait and see (sincerely hope they are right otherwise one twin will be wearing lots of blue).
