Kyoji Needs Help

We had to take Kyoji to the Emergency Vet, and he has a stone stuck in his urethra which won't allow him to pee. They stuck a catheter in him and emptied his stomach but they said if he doesn't get taken care of soon (surgery) that his blatter could rupture, or his liver could fail him. My husband spent our last $200 just for this visit and now I'm crying because I don't know what to do.... please help if you can. Anything will help. I don't want to lose my pup. I don't know what to do and I'm sure this sounds desperate, but we really need help.... With money being hard enough as it is we don't know what to do anymore.