Strange clicking and cracking noises

Ichigo • I have one daughter. I'm also pregnant with my second. Unmarried.
My baby makes crazy noises. Besides the fact that every move she makes is insanely uncomfortable (or painful), there's also some type of clicking noise that kinda reminds me of her dad cracking his knuckles. Since I know there's no way she knows how to do that, I'm curious as to what it is that noise is. Anyone else experiencing this?