question: I had a root canal done 3 days ago. It was the very last upper molar on the right side. The tooth next too, second last molar is a root canal from 5 years ago as well. The second last upper molar is now hurting since the day after my last root canal. Symptoms are - bitting/ chewing on that side causes sharp pain, constant dull throbbing ache, and sensitive if I touch my tongue or finger with it. OTC dulls the pain for 1-2 hrs but no more and I never take meds. I have no medical issues and I am not taking any medications , perscription or OTC. Any ideas?