Is everything that I am experiencing normal?

I am 38 weeks pregnant and am experiencing a few things that i am unsure about. My OB office is closed and I dont want to go to L&D if nothing is wrong. for a few days now occasionally, my hips feel like they are separating from my femur bone. It is extremely painful and happens when I am standing, sitting or walking, not when lying down. Also, today i felt a cramp like when I used to Jog but way lower and right behind the top of my hip on my side. I am still getting BH contractions like i have been for the past week or two but without the usual back pain. I was also wondering if its true that ALOT of women dont even know they are in labor until a few hours before the baby is born? I am starting to get nervous and every women I talk to has a different explaination of when they knew they were in labor.