I went through this as well! I think being a girl I wanted to have that special mum-daughter relationship (I'm very close to my mum) and I just wanted to dress my baby pretty! My Dh was so excited to have a son and it made me feel better knowing I was giving him a son! All fathers want son and mum want daughters we want to be role models for our children! Looking back now my DS was absolutely perfect! Perfect sleeper; feeder; an he never cries! We are so close now! I agree with earlier posts go out and buy a little boys outfit! Start picking names; planning nursery! Ul forget all about having a girl! And it's only ur first I'm now pregnant with a girl! And it feels weird I just assumed I would have a boy I associate all my Preg and baby feelings to my son and now I'm having this girl it's weird!