My cat has diarrhoea. He went once in his litter tray yesterday morning, and then in the middle of the night he went on the carpet upstairs. He hasn't been since. He is currently hiding/sleeping under the bed upstairs (he does this occasionally anyway but hasn't for a while). He's otherwise fine in himself and has eaten all his meals as normal. Should I get him to the vets or is it likely to pass by itself? I'm 9m pregnant and my husband is at work so I'd rather not go unless it's necessary but of course will take him if needed!