Thank you all very much for your compassion and empathy; it truly helps.
I took a vacation day today and I do feel a bit better. It's just so sad. It hurts every time I lean my hand on the back of the couch where Ollie used to sit, and when I go to feed everyone and have to put out one less bowl.... well, I guess any time I'm accustomed to seeing his sleek white face, or running my fingers through his short silky fur (none of his siblings have the same kind of fur).
I am more grateful than ever for my digital camera. I have over a 1,000 pics of Oliver; there are only a handful of his days for which I don't have at least a couple. Looking through them makes me feel close to him. I'm thinking about making a hard copy album, or even spending the $ to buy a digital picture frame.
Thank you again, everyone, for your kindness, truly.
Sending prayers and hugs that your heart ache will be better soon.