Clicking sounds in pelvis?

So I’m 40+3 🙄 and just recently I’ve been Javi by a clicking sound coming from like right below my bump. It’s not painful, I don’t feel anything at all. It just happened now and all I’m doing is laying on my side (that I’ve laid on since I got too big to lay any other way). Didn’t even move at all when it happened. What the heck is clicking 😂