<s>[INST] Had a small filling on lower front tooth to the right done last Thursday. On leaving the clinic , I felt a lot of pain in my chin area for about 1 hour followed by a lump the size of a 10 pence coin which was initially redish. The lump hurt on touch. Went back to denitist the same day and he thought it could be anasthetic trapped in the area and told me to massage it. I still have the lump 3 days later but its more elongated., less hard and less painful on massage touch. [/INST] Thanks for your query, I have gone through your query. The painful reddish lump can be a hematoma following injection of the local anesthesia. Nothing to be panic, it will subside in 3-5days. You can apply alternative hot and cold pack over the swollen area for 10 seconds for 5 minutes, three time daily. If the swelling does not reduce in a week, consult an oral maxillofacial surgeon and get it evaluated. Meanwhile you can take analgesics like diclofenac for the pain. I hope my answer will help you, take care. </s>