It's hard for me to look this up because it's not painful or anything. Twice, I've just been standing, and my pelvis makes this weird grinding noise, and then a quick popping noise. It's not painful, it just feels and sounds weird. I'm 36 weeks today, and the baby has starting moving a lot less. Is this just him wedging down or something? I'm pretty sure he's already dropped cause I feel a lot more pressure in my pelvis while walking and such. The grinding noise is just weird. It doesn't happen when I walk, just a few times when I've been standing still.