odd of giving birth at 34 weeks?

Karena
I'm traveling to FL from NC During the week that I am 34 weeks. It is a 12 hour drive, might be longer with me having to stop every now and then to stretch. I'm worried about going into labor on the road or in Fl. What are the odds of giving birth this early? Should I be worried or will I be okay? Any advice for traveling this long while pregnant?