Churro's Battle: Every Penny Counts

Hi I'm asking to please help me save my lil guy Churro. He is my world. I never even been a dog person but we rescued him from a dumpster when he was just a baby and I had to bottle feed him formula until he could eat on his own. I took him to the vet last week and found out he has a really bad heart murmer and needs to see a cardiologist ASAP. The estimate he quoted me just to do the testing was over $1,400.00 and he said it will be fatal if we don't go soon. I don't have that kind of money right now and I've looked into financial help and found Red Rover could help but I need to have he's testing done first before they provide any assistance to save his life. I've experienced the loss of a child, my first born baby girl died from SIDS when she was only 4 months and 10 days old and that pain is unbearable and it's exactly how I feel right now with the thought of losing my churro and the feeling is so much worse every time I look at him and know that I can't pay the price for his life. He's irreplaceable, being a Toy Xolo he's a very rare breed and we haven't been able to find another to breed him with even though we been searching for the 3 years we've had him we have had zero luck. So I'm creating this because I had a few friends suggest this option after having to see how much of a mess I've become with this whole situation and he's not even gone yet the thought alone is just tearing me up. Just know that I appreciate any single bit of help and I'll do my best to pay back anyone who helps my baby guy any way I can.