It seems obvious after writing the title but yesterday at our 20w ultrasound the tech didn't ask if we wanted to know the sex (as we assumed she would) and half-way through the exam blurted out "It's a ____".
This is our first and the experience created conflicting emotions; we were thrilled that the baby is healthy but at the same time angry with the office (and ourselves) for not being more careful. The latter souring the former when it shouldn't.
Hopefully this helps someone else out!

