Restlessness before labor?

37+1 this is probably really stupid lol but last night I was so exhausted and when I got in bed I was pretty comfy and fell asleep somewhat fast but I kept waking up literally every hour all night my lower back aches today and it was last night but not enough to wake me up I was just wondering if anyone ever experienced this before labor I thought it was weird cuz I was actually comfy last night and didn’t want to but something just kept making me wake up every hour.