Lilly has been slightly off colour since Christmas day. I took her in to the vet yesterday and she had some bad spinal pain. I started her on Rimadyl and there was some slight improvement. She was still off this morning and her breath smelled awful. I opened her mouth and her tongue looked bruised around her bottom canines. I resolved to take her in with me tomorrow. During the day it has got worse. Now her underside of the tongue is green and her lips around the bottom canines have a thrush like growth and are swollen. I'm worried sick. I've given her a dose of Synulox and some Rimadyl. Thoughts on what it may be? And any vibes you have to spare for my old lady.