Hope you feel better, altogether , then. By the way, pain medicine is never given before the surgery, unless there is some special problem like a tonsil abscess that causes severe pain - most people, almost all people, start taking pain medicine only afterwards. In the past three weeks I awake and have a swelling under my jaw. After a period of times the swelling goes down. There is no pain associated.
Pain often comes only with infection.
You should see both your dentist and your doctor. I would go to the dentist first. Some tumors have liquid centers and , like cysts, get bigger and smaller. Please give us some follow-up. I have had a sore throat for almost 5 days, it goes from one side to the other side.