...We have an undetermined!
Went for my 5th ultrasound today. Yes, 5th, and still no idea what i'm having. We think it might be a boy, but the technician couldn't be sure. The heartbeat indicates that we have a boy, and during the ultrasound, she thinks she might have seen a penis, BUT once she thought she saw little girl parts. On a happy note, everything else looks great. I even got one of those new 3D pictures of my baby!
Oh, for those of you who haven't figured it out already, i'm about 21 weeks pregnant.