Having family history of colon cancer puts you at a higher risk for developing one so if you have not had a recent colonoscopy (less then 5 years ago), you need to have one done before your benefits expire.
Unless you have rectal bleeding, abdominal pain or a change in bowel habits, I highly doubt you have developed colon cancer.
You should not be scared of the word cancer...most cancers, if found early, are treatable and curable but at 63, you need to have routine blood tests done as well as a thorough physical examination, including a rectal exam.
Easy bruising is not a sign of cancer, you do not need to worry about it. Weight loss, although somewhat worrisome, does not necessarily mean cancer either. There are other conditions that can cause weight loss (such as over-active thyroid gland).
So, of course, cancer is a possibility, but its a long shot in the dark. You do need to have a full physical exam with blood work and, definitely, a colonoscopy.
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Best wishes and good luck,