Weird cracking or popping sound?

Kelsey

I know this sounds crazy, but I hear some very light cracking or popping sounds coming from my belly sometimes when baby moves. It sound like when you rub the tips of your fingernails together back and forth. I don’t feel anything, but I definitely hear something. I heard it with my first too, but never figured it out. She was born healthy at almost 42 weeks. I KNOW I can’t be the only one who has this happening.