16 week 3D ultrasound

Mary • 29. Momma to 9 & 10 year old girls, and a one year old boy.
I feel like this technician REALLY knew what she was doing! I asked not to know baby's gender until our gender reveal party, but SO will know and he just could not wait! This is an ultrasound pic she handed me at the end, the pics that were definitive of gender were all given to him to keep tucked away. It just enough for me to constantly doubt every guess! 
Notice that at least one leg isn't pictured here, so give me some guesses on our baby's gender! 
We've hoped for a boy, and I'm convinced we're having girl #3