WantMorePink. I have two dds, then had a ds. I was worried about how I would feel about having a boy after two girls, particularly as there was a gap of 6 years between dd2 and ds (so I had done "just girls" for a long time). I didn't find out what I was having before the baby was born and was amazed ds was a boy.
But tbh, he was a baby who just happened to be a boy, for a long time! Seriously, I used to forget he was a boy and get a shock when he changed his nappy (that's what sleep deprivation does to you )!. Only now that he is 19 months old is he starting to show some traits which I could ascribe to him being a boy - eg he is much more cuddly than either of my dds were at this age - surprising and lovely. But generally speaking I see him as a person, not a gender, and I get irked by people suggesting that he does things because he is a boy (er no, he does them because he is who he is).
Maybe as he gets older he will need to be told not to bounce on the sofa, and maybe he will go through a phase of saying "poo" all the time - but he is not loud, boisterous or smelly. I love him because he is ds and he is mine. I have known him for 19 months now and it is his personality that makes me love him, not his gender.
I hope this helps you to understand how I feel. Pregnancy is a worrying time, full stop, and I think that our hormones play havoc with our ability to be logical and make us build things up into much bigger issues than they really are. I'm 20 weeks pg with my fourth too, btw