As you said, you really do need to get her to the vets, and asap if it's growing that fast.
Can you describe how it feels? Is it hard? Soft? Does it move under the skin? As I understand it, abscesses are soft and move under the skin and I think tumors are hard... I'm sure somebody with experience in lumps will be along, soon. Does she seem in any pain with it?
Can you describe how it feels? Is it hard? Soft? Does it move under the skin? As I understand it, abscesses are soft and move under the skin and I think tumors are hard... I'm sure somebody with experience in lumps will be along, soon. Does she seem in any pain with it?