Sorry people are being annoying. I sometimes think their reactions and questions make gender desire 10000000x worse (it does for me anyway!).
I think with this pregnancy we're taking the approach of only telling close family because I can't deal with the "you/your husband muct be desperate for a boy!".
I think in your position, I would prepare myself and assume that I was having another boy. That way you won't be disappointed.
I totally agree with the above, other people's comments definitely make things worse and they make me so mad. I'm always VERY careful with what I say to people now!! I also got lots of those comments when I was pregnant with number 3 and I usually shrugged and said 'a girl would be nice but a boy would be fine too, boys are a great!' or something like that, if I denied outright I wanted a girl I was met with incredulous looks so I figured I may as well be a little truthful! Amazingly I'm STILL getting those kind of comments!!
I also agree to just assume your baby is a boy, if you mentally prepare for it to be so then a girl will be a wonderful surprise but hopefully hearing boy won't be too much of a disappointment. I think we all carry that flame of hope inside us and it's almost impossible to put it out but I did such a good job of convincing myself number 3 was a boy I was almost numb with shock when they showed me my DD! It felt like they'd swapped my boy and the girl they gave me wasn't really mine, it took a few days to really bond with her but obviously I love her to bits now.
Good luck xx xx