Before I start.. please don't huge or make horrible comments. I feel bad enough as it is..

We are expecting our first baby. I'm waiting for my next scan to hopefully find out gender but we have talked about what we would like and we really want a girl. I know this sounds terrible and I feel so guilty but I'm worried about feeling disappointed if we turn our to be having a boy. Does this make me a terrible mother already? It's depressing me to think I could be disappointed with this... I have midwife tomorrow so I'm thinking of talking to her about it. I'm so close to tears thinking about how horrible this makes me but I want a little princess so badly.