My 45 year old sister just got diagnosed with colon cancer and showed no symptoms.  I am 42 years old, overweight, and have had hemorrhoids for years.  I have intermittently passed blood while having a bowel movement, sometimes a lot of blood or even a clot.  I sometimes tend to be a hypochondriac and I have convinced myself that I have it too.  Should I panic?
Hi, you have a symptom of passing blood clots which is not due to hemorrhoids. Intermittent passage of blood can happen in hemorrhoids or cancer. But cancer may also have other symptoms like palpable mass in abdomen, constipation, weight loss, but these may not be in all the cases. You have to undergo colonoscopy to rule out the possibility of a colon cancer as your sister already have the same.