help !

Cristina
So in about 3 hours my husband, my daughter and I will be heading out to NYC it's a 9:30 hr drive from NC . Am 31 weeks and 2 days . I have no idea how I'll sit in the car for so long . Yes will stop and eat and walk but my back already hurts when I sit in the car . What can I do for the back pain ??? I've done the trip to NYC 2 times before but back pain wasn't bad at all . Any advice ?