Hi ! Good evening. I am Dr Shareef answering your query. If your CT scan of abdomen is normal, for the present you should discard your apprehension about cancer. I would advise you for a lot of roughage in your diet with sufficient amount of water. Go for a regular exercises, and go for a stool test for ova and cyst. If something comes out to be positive, then treat the ova or cyst. This might relieve your symptoms. 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