Cramping and back pain

Brittney • 25 • Jack 👶🏻 10.26.19 • Charlie 👶🏻 02.06.21 •Endometriosis • T1D

I’m 36+6 weeks and for the last few nights, I have had terrible back pain whenever I go to bed all throughout the night plus some period like cramping. It’s bad enough to wake me up. It is pretty constant pain though.. it does not come and go. Only thing that really helps is walking and a hot bath. The minute I lay back down, the pain is back! Is this just my body preparing? Is this how labour starts in the early stages?