Sterilize Bulgarian kittens

Hi everyone, as anyone living in Bulgaria knows there are so many street animals, 6 months ago I had a feral female cat , that I feed and care for have a litter of 5 kittens, that now need to be sterilized, so we don't have hordes of kittens back on the street with no care. Currently I am feeding between 5 to 10 adult cats, that I have managed to have sterilized. I financially need help to sterilize these new 5 kittens and I would love to have a trap and sterilize fundraiser going on a long-term basis, to help reduce the amount of cats in the streets and around our bins. Yes, the cats are the biggest problem but there are also dogs that need help. But right now, I need to start with the 5 kittens that are almost at the age where they can go into heat and have kittens. Every little bit of help is greatly appreciated and can make such a difference in these cat’s lives and that is a never-ending reward, seeing them healthy, not underweight, without injuries and living a good life is my aim. Making a difference in lives that can’t help themselves! If you would feel more comfortable putting funds into the veterinarian’s bank account i can arrange that. Please help me stop these babies from having babies of their own.