Thank you for the query.
If you have had colon cancer
in the family (in two relatives) and one of this persons has been younger than 50 when diagnosed, you may be suffering from HNPCC (hreditary nonpolyposis colorectal cancer
). Therefore genetics evaluation and oncologist
consult is necessary.
Your symptoms might be caused by colon cancer indeed. I suggest you to visit your doctor, have physical examination and consider colonoscopy
Hope this will help.