<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi,I am in my age 20. I find discomfort on my right side of body, near adominal area and my back for a few days now. Just today, there is a slight hint of pain near my right side, in between my right pelvic bone and belly button. What could it be?Thank you.  <response>: Hi. Thanks for your query and an elucidated history. . Noted your history of age of 20 and pain on the right side of the abdomen and back and now between the right pelvic bone and belly button. The most probable causes are:ColitisAppendicitisright kidney swelling. The best way to get a proper diagnosis is high resolution ultrasonography or CT scan of the abdomen. The treatment will obviously be according to the diagnosis. 