I don’t understand people

Whenever I tell people we’re having another girl (we already have a 4 year old girl) they usually say something like “Oh...that’s ok” or “Aww I’m sorry. You’ll just have to try again.” People make it sound like it’s such a bad thing to have two girls. I did want a boy really bad but I didn’t say that to anyone. I’ve been really upset about not having a boy because this is our last child so it doesn’t make it any easier when people make comments like that. Why can’t people just say congrats?!