my dog ate a very thin piece of cloth about 5 inches long from a dog toy 4 days ago. she is eating well, pooping normally and running around. 2 days ago she passed some of it in her poop but I haven't seen any since. I think it may be possible very small pieces have been coming out all along but it's been freezing so I couldn't really look through it. she is still eating well and acting like her happy self. should I still be concerned?