Help end Tanks suffering

Update 8/24 Tank has crossed the rainbow Bridge thank you so much for your love and donations

UPDATE 8/22- The vet called to check on him and wasn't surprised he wasn't eating much, even with the appetite stimulant. I wanted to do at home euthanasia but it's literally 800 bucks plus 300-500 for cremation. It's so stupidly expensive and predatory to charge grieving people that much money. It's 500 if I take him in to the vet office.

thank you to all who have donated for his vet care. if you can please donate and share so that I can give my sweet ginger boy relief from his suffering. I changed the goal from 8k to 3k. The 2k went to his vet visit and diagnosis. The remainder will go to his euthanasia and cremation. Please help

My baby cat Tank is dying. It came on so suddenly, he was fine last week and then he stopped being his usual little chaos demon self. His abdomen is swollen and he was having pooping issues. He hasn't made a peep in 3 days and the last noise he did make was and indignant squawk when the mobile vet took his temperature. They drew some blood and the results were that it could be kidneys or liver and he needed an ultrasound. I suspect an intestinal blockage because despite alll of my efforts to thwart him, he is a plastic eater as of now as he hasnt pooped in a couple days. He is still trying to eat but he's so cool to the touch(and doesn't really want to be touched right now) and just sleeps so much. He'll get up and go to the other room to pee (a little) and he just managed to jump up on the bed but otherwise just stays on his bed on the floor.

He's 15 yrs old and like I said he was pretty good for his age until about a week ago

The ultrasound and probably surgery was quoted as upwards of 6k. Please help me save my cat.