Our 4 year old became constipate back in January and it took a couple of months to get him "regular", but ever since he will not stop pooping in his pants. He pees in the potty, but will not poop. We don't get upset, we simply change him. However, we have taken everything away from him. No cartoons, no play dates. We've tried treats and praise when we do get him to the toilet in time, but now he's hiding from us when he has to go. What do we do????