Popping in pelvic area..

Cheyenne • In love with Zachary, mommy to Bradee Rae.💗

So, the last few days when I change positions in bed my pelvic bone pops, like really loud, sounds like a back popping.. it’s really painful to turn over these days or to get up out of bed but now the popping has me worrying.. has this happened to anyone else? What is it? I’ll be 38 weeks in a few days.