Roscoe’s vet bill

Hi, so I just got a call back from the vet and it turns out Roscoe doesn’t have a mass or need surgery, (which is why I took down the previous posting.) However they saw he has an enlarged heart and they want to run further testing and referred him to see a cardiologist to get an echocardiogram. I’m not exactly sure what is going on with him. Anyone that knows me knows my dog is my world and has been my best friend the day that I got him. This is a very hard time for me. But unfortunately I can’t afford the vet bills, any help would be appreciated!!!!