A question. I had a root canal on September16th. Very bad pain coming from it a week later with follow up re-treatment for a missed canal on October 16th on which the Endodontist did one root only. Endodontist said it was a fin ?? Now, after 1 month later, the tooth is so sensitive that I cannot even touch it or press on it without pain coming back within seconds. Sharp pain, almost instantly which lingers.It hurts just to push this tooth slightly with my tongue. Also I'm still having some cold sensitivity, they say that it's inflammation of ligaments ?? I cannot eat or chew on that side for fear of such pain. Also having major sinus issues above this upper molar. Went to my doctor yesterday and he said possible sinus infection and now I'm on antibiotics for 10 days. Follow up visit to Endodontist Weds morning for a checkup and I am insisting on another 3 D scan of tooth. Please, anyone have some advice ?? Living on Advil liquidgels almost daily and now antibiotics too ?? Any similar situations ?? Help !!