I understand you cannot suggest probability or diagnose.
Are there other inestinal conditions that would create my symptoms and what are they?
Even without the symptoms, at age 50, a colonoscopy is recommended.
I cannot comment on the probability of colon cancer, or not, but changes in bowel habits as well as in the stool shape can be indicative of cancer.
I am not familiar with the specific arrangements for colonoscopies in your area. I would first start with finding a primary care doctor, or failing that, going to a clinic to ask for a GI referral for a colonoscopy.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin Pho, M.D.
www.kevinmd.com
www.twitter.com/kevinmd