Hi, From your explanation, it looks like a hematoma that appears to be infected or putting pressure over the terminal nerve endings. A hematoma is a harmless tumour-like mass formed due to spillage of blood from ruptured blood vessels leading to accumulation of blood into the soft tissues forming a lump. At times the hematoma gets localized and encapsulated and forms a firm hard lump that can take a long time, say a few months to resolve, but it generally tends to resolve itself. As in your case also the lump seems to be due to a firm hematoma and you need not worry as it will resolve gradually. You should do alternate warm and cool compresses over the lump. Apply Heparin gel as it helps in the faster disintegration of the hematoma. In case if it worsens consult a General Surgeon and get evaluated. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Honey Arora, Dentist