Anyone been told one gender at 20 week US only to have the opposite?

[indie24]

My godson was predicted to be a girl

[beansbeans!]

friend was told she was having a girl, ended up being a boy. She has boxes and boxes full of pink that she hasnt been able to use yet!

we were told by the guy at our 3d/4d scan that he was 1000% sure of what we are having. Even though Im sure he is right, I wont hold him to it until sprout is born!