Suddenly he has become unfriendly. He is sleeping a lot, with his back to us and in places out of reach. When we can get near him he cries if we touch his stomach. He has eaten little over the whole day. We think he was fine until lunchtime, although he was very sleepy leading up to lunch. I think his tummy is sore - he makes a noise when i press on it. No signs of anything untoward happening in the house so Im very confused. Any advice? I realise this is a bit vague sorry.