It's not very common for them to musk, but I wouldn't doubt it because he's so small. He's probably a nervous little thing! The white lumps sounds like he peed on you. Usually they'll go number one and number two at the same time. Considering how small he is, he might not have eaten yet, so you probably didn't miss any poo. But that's okay
prepare to be a human toilet! I can't tell you how many times I've been peed and pooed on. You'll learn to recognize when they're about to do it.