No movement

I'm 35 weeks tomorrow. Just went for an NST yesterday and baby boy looked great. We're about 2 hours from home now at the lake and I haven't felt him move today but I'm not sure if I've just been too active out on the boat and such. I drank a glass of juice, ate a sandwhich and drank some coke and have been laying down now with no movement ... could he just be lazy? Anyone's baby have lazy days?