Hi! I'm new to the bump and this is my first post, so sorry if I'm going about it all wrong, ha. Was wondering though how common it might be to get the gender wrong with a 20 week ultrasound? I've been told I'm having a girl, but just signed onto my FB account and saw a friend of mine found out she's actually having a girl after being told it was a boy with a previous ultrasound. I've bought so much pink already but now I can't help but worry!