My ferret hasn't pooped in hours?

has he eaten anytime recently? I mean 6 hrs isn't even that off for a ferret to not poop. I made a 6hr road trip with 2 ferrets once and only 1 of them went in the car. Ferrets pee and poop at the same time. I find it hard to believe neither function was working. I'm also glad I don't have nieces like you. You take it in for her and you have to pay for it?