I had to take him in for the u/s on his scrotum today. It took three people (me, my mom, and the tech) to hold his little 10lb butt down to get an accurate reading. He also peed all over twice. He was angry little one.
It's just some excess fluid that should resolve itself. Thankfully it's not a hernia or worse.
The poor thing is all out of sorts. He's tired but fighting sleep. Poor guy.