My friendly well behaved cat has pooed in the house twice in the last week. This is very unusual and he has never done this before. He's just under 2 years old, and while we have a tray for him, he usually goes outside to do his business. He does seem a bit out of sorts. For b example he has no problem me holding him.. usually he tried to squarm his way free, plus he's sleeping in one of his cat beds that he never uses. Any advice on what could be going on?