With my first girl, Scarlett, I booked the vet right at the x-ray appointment to come to my apartment in 10 days. That was the Thursday before a long weekend so that I would have time to stop crying before going back to work. For those 10 days I ordered in food every night so she could have all kinds of goodies. I took her last day off to spend with her and she received guests all day, and the last hour she was surrounded by 8 of us who loved her the most.
Those last 10 days came at the end of a truly blessed 13.5 years together. I have to say, knowing what I know now, I might not wait the 10 days. I know I was petrified every day that I would come home to her being injured and in extreme pain.