so throughout this pregnancy i havnt had any back pain im 38weeks and for about the past 3hrs its felt like someone kicked me in my back it started with like this sharp pain almost like a nerve or something i felt it go from my tailbone to my head it shocked the crap outa me then it happened again half an hr later now my back feels like if i had a ton of bricks dropped on it just wondering if this os normal had braxton hocks on and off yesterday today not so much besides this pain what can i do to help it if it is normal?