My dog is sick! I have cancer and no income. I rescued her from a facebook post. She needs a vet. Any advice?

Humane society told us that they are a wellness clinic providing shots, heart worm prevention. Neutering, But if they are sick we are told to take them to the vet. I was informed san antonio has dog rescue/refuge centers or call the city of san antonio

I know they see pets at the Humane Society for a reduced cost. Also at Affordable Pet Care...you might call them to see if they can help. So sorry for your issues.