Girls, who have already given birth or know. 40 weeks already, and sin…

Girls, who have already given birth or know. 40 weeks already, and since last evening, the belly is like it's turning to stone. Like the baby's bones are hardening, not even the belly itself, but specifically the baby. Has anyone had this feeling? Maybe before labor like that? Still in the belly it's like it's grumbling, right little pops are audible) not when you drink water, but just sitting quietly and hearing how it grumbles)