The baby aspirin 81 mg is not doing the trick. She is a 23 # XXXXX Terrier, and I'm an RN and certain it is her tooth. She is shaking her head, screeches several times daily in pain (this started yesterday afternoon), and was hiding under the bed last nite. At her last vet exam (3 weeks ago) they told me to keep an eye on this tooth. Any other suggestions? I would HATE to run to the ER, I'm hoping she can be made more comfy until tomorrow am. Would it be advantageous to call her vet and get an antibiotic?