Hi ! Good evening. I am Dr Shareef answering your query. Although a physical/clinical examination is required to diagnose your problem, the history you have narrated points more towards a perianal abscess, either a primary one, or due to the closure of the external opening of a fistula in ano. Apart from this, the hemorrhoids could get prolapsed and strangulated resulting in a painful swelling in the perianal region. If I were your doctor, I would advise you for a routine blood check up including a blood sugar, and refer you to a general surgeon for a clinical evaluation and further management. 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.