I am so very sorry for your loss. My baby (dachshund mix) passed away to congestive heart failure less than a year ago (the day before my birthday)...it was absolutely heart breaking. It really hit me hard when I got home to a silent house (she was my only baby at the moment) and I was used to the "hello" and hearing her tags ring around the house.
It gets easier with time and you remember the good times with smiles instead of tears after a while.
I will be praying that you and your family be comforted throughout this difficult time.