my 5 yr old westie has been a wee bit of colour since Sunday. She had diarrhoea yesterday and last night but not much at all. I think she was also a wee bit sick but like waterbrash. She has had a wee boiled chicken breast today and water but nothing else. she went out to the garden before bed but came in with her back passage covered in red blood. the vets closed till the morning any advice?