Hi ! Good morning. I am Dr Shareef answering your query. Once any lump is painful, it has to be inflamed/secondarily infected. From your history of fast growth and very painful swelling, the diagnosis goes more in favour of an abscess. This has to be confirmed by a physical examination of the lump, and needs immediate attention of a surgeon. Therefore, I would advise you to report at the ER of a nearby hospital at the earliest possible to have it managed properly. Till then you can have some anti inflammatory drug along with a proton pump inhibitor for a symptomatic relief. 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. Wishing you an early recovery. Dr Shareef.