I'm 18 weeks pregnant so technically I could find out now. We have three girls already, the youngest is 2. I found out with all three at 16 weeks but had been set on waiting until the birth for a surprise with this one but now I'm wavering. I'd like to be able to tell the girls, particularly the youngest, if it's a brother or sister and have them help me be prepared but part of me thinks a total surprise would be cool too. It's very likely my last DC so the last time I'll get to make this decision.
DH is desperate for a boy, I'm happy either way. If you've done both, what did you prefer - finding out during pregnancy or at the birth?