I remember being told what they tell you is not 100% accurate anyway. Not sure if they tell you that here but they do in the UK just in case they do get it wrong.

So when we were told we were having a girl we told no one and brought nothing pink until after she was born. Even when they took me for my c-section they asked if i knew and i said yes we were told a girl but we will wait and see what comes out.
I think it is best that way.