It's a......

hsmommy

BOY!!!!!  I am over the moon excited.  DH is happy but in shock.  This will be the first boy on his side and so, while he really wanted a sister for Hailey, I think he was certain that his side would just be all girls.  DD was really hoping for a sister too and when we found out, she folded her arms and said " no boys allowed in my house!" lol  She;s already starting to warm up to the idea of a brother, but I'm sure it will take some time.  The u/s tech said that we;d need to learn to change diapers a bit quicker this time around, LOL