Pet passing

My dog rusty passed on in his sleep while i was at work, he was 13 years old, my only reason for living, im 58, im lost sad,i live alone. Next morning i took him out to the countryside dug a big hole and buried him in a container with a blanket and a big picture of him,covered his grave with lumber, branches and set moss all around his spot,the following saturday i built a cross with his birthdate and his name etched on a wood plaque.my heart is broken, and im not sure i will ever recover,.