A hematoma doesn’t necessarily have to cost hundreds of dollars … talk to your vet about payment options or care credit … or ask your vet if there are local animal welfare organizations that may be able to help.
There are no “home remedies” that I am aware of.
What diagnostics did your vet do to determine it was pancreatitis? It is possible that she’s reacting to the antibiotic or it is possible that the diagnosis is something else. I’d definitely call the vet back and tell them what is going on.
blood test and general examination. I will call to see if it’s a reaction to the meds
Can’t comment on the blood test much without knowing what it showed and whether or not they ran cPL. Please do talk to them, though.