Hi! Good evening. I am Dr Shareef answering your query. As the trauma described by you was 3 weeks old, I would not consider an intestinal injury or an internal organ injury on my priority list of diagnoses. Most likely diagnosis would be a soft tissue injury of the abdominal musculature and sub-cutaneous tissue resulting in a hematoma formation coming up as a bruise which would take at least 3-4 weeks to get absorbed. However, this needs a clinical assessment to be very certain about it, and if I were your doctor, I would also recommend an ultrasound of the whole abdomen to rule out any kind of internal injury. In addition , I would prescribe an anti inflammatory along with a proton pump inhibitor drug for a symptomatic relief for the present. 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.