question: I had root canal on Tuesday and while the pain is getting better daily the gland on the side of the root canal and the jaw on the side are swollen and sensitive. I am on antibiotic. I've had root canals before done by the same endodontist and have never had this kind of reaction. Is it normal or should I be concerned? It took about 4 shots of novicane for it to take. It's tooth #18 so it's the bottom left molar. I'm also having trouble opening my mouth beyond a little bit. The pain is not what it was the day after the root canal, but when I try to eat it hurts after a little bit so I've been alternating between Tylenol and Advil. Could the swollen gland and jaw be from the root canal or should I call my regular doctor? It's only on the side where the root canal was done. Thanks