I am wondering how accurate an ultrasound was to determine the sex of my baby at 12 weeks. I went for an ultrasound today to do the nuchal translucency test, and since the baby was not cooperating, I had to move around a lot. The ultrasound tech was able to see every possible angle of the baby, including a shot of the butt and the legs straight up. Right between the legs we were able to see a penis. She said she is almost positive it is a boy. I didn't think it was the umbilical cord b/c it was not long, but rather small (the size one would expect for a penis between legs). However, when I spoke with the high risk doctor he said that it is unreliable at such an early age, even though she had a revealing shot (and what else could it have been - I can understand not being sure in the case of a girl, but it seemed very obvious that it was a boy. How accurate do you think this is??? Thank you very much for your help.