It does sound like mastitis to me as well, especially if it's just one gland that is swollen. These guys can be hard to treat as we need both oral antibiotics and local treatment. Locally, you need to hot back the gland every 4-6 hours. You do this by holding a warm water washcloth on the gland for 5-10 minutes. After the warm packing, you need to milk out as much of the milk/ pus as you can out of the gland.
If you don't milk out the gland daily, it does not tend to heal well. The other thing that can help is using cabbage leaves to wrap the gland. The cabbage leaves can pull some of the inflammation out of the gland.
I also put thee guys on pain meds- usually a combination of an anti-inflammatory (Rimadyl
) + an opiate pain med like Tramadol.
For antibiotics, I usually go with Clavamox
is another good option.
With the swollen vulva, it's likely that she had a false pregnancy
leading to the mammary development and then the gland got infected subsequently. I don't think the cat had anything to do with the mastitis development.
I hope this helps, let me know if you have any other questions.