I am really sorry to read about the loss of your beloved dog and your fears for Fluffy's health.
I know the Blue Cross run a telephone bereavement support service - I don't know if that is the one you tried and didn't find helpful.
Amazon do sell second hand books, some for only a penny, but you do have to pay the postage. I often buy books this way.
I've also found an e-mail support service for those preparing to lose a fur child to Rainbow Bridge. I don't know if you would find this helps at all?
Preparing for Pet Loss Support Programme
Thinking of you and Fluffy.
Run Free at the Bridge Maxi.