i have a dog, a beagle, and a cat. we've lost several pets throughout the years, from old age, and i completely understand what you are going through. it is psycologically draining to worry about losing a pet. whenever we lost one we would get another one to take it's place. there are actually places like pet cemetaries where you could place them after they pass away. i don't mean to scare you, but just trying to give you some comfort for when and if your pet passes on. i don't know about how to find someone to talk about your loss or worries but maybe the vet? I know our vet has several assistants that are there for people dealing with such situations. i'll pray for your pet, and give them love and comfort!!