Making vocal noises while sleeping during 6th month of pregnancy?

Today I’m 24 weeks! But each night I am losing more and more sleep because I’m hearing myself make vocal noises all. night. long. I’m driving myself crazy, and though he won’t admit it, I think it’s bothering my husband too.

It’s different than talking in my sleep, which I often do but which doesn’t wake me up. This is more of an “mmmm” or soft grunt sound that lasts about 1 second and happens maybe every 30 -60 seconds, even when I try really hard not to make them! I don’t know how to describe it, but I’m hoping it’s a pregnancy symptom and will go away once our girl is here. I use a pregnancy pillow too. Anyone else able to relate or am I just crazy?