Hi ! Good evening. I am Dr Shareef answering your query. From your history, it seems to be a hematoma initially due to the trauma, which now got inflammed, and if not treated might turn into an abscess. If I were your doctor, I would advise you for an anti inflammatory along with a proton pump inhibitor along with a broad spectrum antibiotic, which might relieve the inflammation and some kind of pressure bandage might be needed to get it absorbed gradually. If not , you might have to get it assessed by a general surgeon in your area. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef.