Try applying for CareCredit.com, and this will help you make installment payments for the vet visit (more info, below). Also, check out these organizations, and see if they'll help you pay for your kitty's medical fees:
American Animal Hospital Association
" Through the AAHA Helping Pets Fund, veterinary care is possible for sick or injured pets even if they have been abandoned or if their owner is experiencing financial hardship."
Angels 4 Animals
"Our services range from financial aid to complete treatment
to those pets and pet owners in need."
A credit card company for health care, including veterinary care.
"With a comprehensive range of plan options, for
treatment or procedure fees from $1 to over $25,000, we offer a plan
and a low monthly payment to fit comfortably into almost every
Feline Veterinary Emergency Assistance (FVEAP)
"Seniors, People with disabilities, People who
have lost their job, Good Samaritans who rescue a cat or kitten - any of these folks may need financial assistance to save a beloved companion."
The Feline Veterinary Emergency Assistance Prog ram is a nonprofit 501
(c)(3) organization that provides financial assistance to cat and
kitten guardians who are unable to afford veterinary services to save
their companions when life-threatening illness or injury strikes.
God's Creatures Ministry
"This fund helps pay for veterinarian bills for those who need help."
"Our efforts focus on serving the elderly, the disabled, and the
"We are dedicated to insure that no
companion animal has to be euthanized simply because their caretaker
is financially challenged."
The Pet Fund
"The Pet Fund is a registered 501(c)3 nonprofit association that
provides financial assistance to owners of domestic animals who need
urgent veterinary care."
See if you can work out ANYTHING with the local vet or ER vet center, to allow you to make payments, after you describe your cat's symptoms. He really does need to be seen as soon as you can get him in. I understand your financial bind, and hope you can possibly borrow from friends/family, to have him treated by the vet, ASAP.
I wish you and your kitty much good luck!