Masons surgery

Hey guys, so my mason here has some kind of blockaged in his stomach that caused him to puke and get dehydrated the other night so bad that he couldn't walk and we had to take him to the hospital, the surgery costs about 5,000. I'm a college student and the X-rays, visit, and IV already cost me 800$. It's so devastating because I really thought this dog had a little more time he's about to turn 5 in two weeks. I refuse the surgery for now and went against doctor recommendations because I do not have the money for him. It breaks my heart but I want to give him a second chance to see if maybe there's a way he'll push whatever he ate through but in 3 days if he doesn't, it's either surgery or he has to get put down. Anything is appreciated, really. Thank you. Also mind you if I do not give my dog the surgery because I didn't reach my goal, who ever donated I can use it towards the visit that I already paid which was 800$ or if anything comes up like other options for him I know we might take him to different doctors and see what they recommend. If not I can return your money or donate it to a shelter so it's going to a good cause.