Gromit has a Heart Problem

Yesterday Gromit had an appointment with a Cardiologist at Sage down in Campbell.  They ran a number of tests on him (EKG and Echocardiogram) and yes, he has a heart problem.  Actually, he has two different heart problems.  The sent him home for 24 hours wearing a Holter Monitor.  The Dr. wants more information before he determines our next step.  It is like a punch in the stomach.  I just can't describe how I feel right now.   On one hand devastated and on the other hand relieved that we were able to catch this early.  Gromit just turned 4 and I was hoping that he would live forever.  I know, I know that is so not realistic, but this is the first dog I have ever had come into my life and take it over.  He is my heart and soul, he is my teacher and my student, and I am just not ready for anything to happen to him.  Need to be positive and need to see what the vet says this afternoon, then wait for the report which will take a few days.  Ugh!