Bash's Emergency Vet Bills

Bash is not doing well. We went to the ER on 7/10 Friday night for a cough. They sent us home with anti-biotics and pain meds. Through the weekend, he started to have a hard time breathing. 

Monday morning we took him to the vet where they said his X-ray showed fluid in his lungs. This vet thinks it's pneumonia. He was immediately placed on oxygen, given antibiotics and nebulization. Then we had to transfer him to the ER vet again so that he could be monitored over night. Now he is back at the vet. He has been on oxygen this entire time, and every time I transfer him back and forth his numbers go up and then slightly down each time. 

I want to transfer him to AVS (they have more specialized veterinarians) where they can keep him on the oxygen the entire time and not having to transfer him each morning and night. 

AVS is quoting us $5000 minimum. All these other visits have added up to $3000 already, and we're maxing out our credit cards. 

Please if you can donate anything at all, it will help. I just don't want to lose Bash.