IT'S A.......

BOY!!!

Yes, after first thinking it looked like a girl because he had his "parts" tucked away, the doctor came back to take a second look a few minutes later and said it is definitely a boy! And looking at the pictures, there is no doubt!
This was a very fun sonogram because it was a very long one (like 20 minutes or so), and the doctor was very good about explaining everything he was looking at, which was fascinating even on this third time around. Also the baby was moving around a ton! We could see him kicking, opening and closing his mouth, wiggling his fingers, and he even sucked his thumb at one point!