I am so sad . . .
I very much feel for you and wish you heartfelt hugs. But remember, it is a gift we have for our beloved animals to be able to end their pain and suffering and send them on to a better place when there is no other alternative. I just had to put my horse down who'd I had had for 16 years--the absolute love of my life, and I still cry when I think about him. I also still dream about him, then when I wake up and realize he's gone, it hurts so very much. But, there was nothing else we could do for him, and it was the kindest thing we could do to end his suffering. I'm sure you did everything for him you could, and he's not hurting any more.