Hi ! Good evening. I am Dr Shareef answering your query. This could be because of inflammation due to sitting on your butt for a long duration. If I were your doctor, after a clinical assessment of yours, I would advise you for a broad spectrum antibiotic, an anti inflammatory drug, and a proton pump inhibitor for symptomatic relief, and possibly a cure. If it persists or increases, I would refer you to a general surgeon. 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.