Is that a penis?! Trying to figure out sex :)

Madyson • Married to someone I`ve know since preschool, mother to someone I`ve known for almost 3 years. TTC #2!
The ultrasound technician wouldn't tell us her opinion on sex of our baby (13 weeks day). Is that white thing down there a penis? It just seems so big to me compared to the rest of its body. Thanks!