Thanks for your replies everyone. DH finally got onto a vet on the phone and they said it could be a viral infection (because of the cough). We will monitor him and see how he is in the morning. He has never been sick before, he's 6 1/2 and we've never had any problems with him before. The vet said we need to pre-warn them if we bring him in because he could be infectious.

I'm so worried, I hope he will be OK. If he's still not good tomorrow I'll have to get DH to take him in.

Ali - Thanks . There has been no blood, not in his poo either thank goodness.