Help Me Save My Cat. Please

Meet my cat named Milo. Otherwise known as " the nugget"

He is a year and a half old and is the love of my life. I have no children and view him as my son. He is extremely affectionate and plan to make him a registered therapy animal and be able to bring him to hospitals and long term care units to bring others joy. He loves people and isn't scared of anything. He means a lot to me, and everyone in my life. I am so blessed everyday to be around him. 6 months ago I spent 2000$ to save his life from Blatter stones. They came out of no where and was a huge emergency. ( can attach any paperwork if wanted). I was told and was hoping it was a one off thing, we put him on special food and went on our way. 6 months went by and everything was fine. Then Monday Dec the 7th Milo was screaming in pain and was bleeding and could not pee again. He has been in hospital now for 3 days and has had a number of tests done. Once sent home I will be faced with a 3000$ vet bill. This is crippling to me at a time like this. I have donated to group funding's before and know how people can stand together to help each other. Not only is this bill one time, but my vet has told me that if this issue comes back he would need to have more tests and surgeries. I cannot afford do this again... And would need to put down Milo. This would BREAK me. I lost my last cat 2 years ago from Cancer and blamed myself for not being able to pay for his treatment to live a little longer with me.

Please help me, Milo means everything to me. Anything will help.