My dog is deadly ill.

My dog is a 4 months old Golden and Labrador Retriever mix.His name is Jack.I got him by adopting.

He was living in a small house with 10 other dogs and it appears he got his illness there.3 days later he was having breathing problems and unusual movements in his stomach also he was out of his lightning spirit so i took him to the vet and we took the blood test.His immune system is in a bad condition and he has internal infections, by bacteria and virus.I have to take him to the vet several times for antibiotics and care, and i need to buy him his medicines.But the problem is that in Turkey, Vet requires hell a lot of money and i am a 18 year old university student with the lack of money.Vet said virus and bacteria infections has a considerable threat of death and i do not want to lose my friend.