Anyone out there have 3 of one gender?

My husband and I are expecting our 3rd son. We're very excited about having another boy, but since this was going to be our last one, I'm not sure that I am ok with never having a little girl in our future. Part of it could be that our very first child, a little girl, was stillborn at 37 weeks. I guess I just feel saddened at the thought of never having a little girl to raise. We really don't want more than 3, so having another one is not really an option. I'm wondering if you, or someone you know has 3 (or more) of one gender. Does the desire for that other gender ever go away? Please don't get me wrong, we are thrilled about the son we're expecting, but I think every mother wants a little girl at some point ya know?