I am totally with you Gini!!
A few monthe before our Sydney died, we went away for 4 days too, and left him upstairs with plenty of food and drinks. He was okay; but when he died four months later, it gave me such a bad feeling that I had left him on his own...! What if it had happened then??? Horrible feeling!!
I swear you, I will never ever do that again, not even for 2 days!!