I had a root canal un my upper back tooth on Friday. I woke up Saturday with a facial droop, a kanka sore and swelling from my eye to my jaw bone. I knew I had an abscess when they started. My face hurts to the touch and the kanka hurts as well. I look like a chipmunk. I am on antibiotics. When can I expect the swelling to go down? When will it stop hurting? Does anyone know why this happened. It was a repair of an old root canal done 25 years ago. The surgeon said it was the worst job she has seen in her 23 years of practice. Is there something I should be doing to help with the swelling?