It's a...

We stared at the monitor. For a few seconds, the baby wasn't moving. It's a new experience, being a parent. Especially to a creature you can't really tell is there. For just one moment, I wondered. Then the baby shifted.
"Holy cow, it's moving!" I thought.
The nurse moved her wand again, this time highlighting the heart. It was beating. Later, she would turn the sound on so we could hear the 154 beats per minute. I hadn't heard it before.
Her wand slid over Jenn's belly, glided along by surprisingly warm light blue gel.
"You wanted to know the gender, right?" Sheryl the sonographer asked.
"Yes."
Her wand hovered for several seconds over the magic area between baby's legs. We saw it.
It's very clear. I've never seen a gender ultrasound before - not even pictures. But the little spaceship was unmistakable.
"What was your guess again?" Sheryl asked.
"All our friends think it will be a girl," Jenn replied.
"Well, that sticky-outy thing is definitely a little boy part," Sheryl the sonographer said.
The nurse snapped a few pictures of the sticky-outy thing and then moved on. She waved her wand over the head, arms, legs, heart and a number of other organs and appendages. She didn't talk much. Every once in awhile, she would tell us the body part. She worked smoothly, tapping keys and moving the mouse to take her measurements. A few times, parts of the screen flickered with red and blue spots, measuring blood in the umbilical cord.
After an eternity of waiting, she told us that she couldn't get an accurate reading of the heart. She said she wanted to wait until baby was a little bigger. She'll have us back to finish up the ultrasound in a couple of weeks.
She was kind enough to tell us we had nothing to worry about: the baby was just a little shy. In a couple of weeks, she would finish her measurements and try to get us a picture of the face.
Jenn and I agreed: we didn't care about the face. We just wanted a moving, healthy baby.
And that's what we got.
In case you missed it:
IT'S A BOY!
You'll just have to wait on the name, though. It's a secret.

(The mouse is pointing at the sticky-outy thing)