Seems like there is some sort of a swelling in the bone over the tooth. Is the tooth decayed? How and when did the pain
start? How has it changed, if at all, since then? Another possibility is a fractured tooth
. Treatment will depend upon the condition of the tooth. Either RCT with or without a Post an core, or extraction. The decision can be made between you and your dentist
after a thorough evaluation. Kindly do see your dentist at the earliest. You do not need to endure the pain.