Hello, again!
Some of your post is cut off again, but I have more to work with this time, so I'll give it another go 'round...
I think your doctor meant that your polyps did not appear to be cancerous, because polyps are not graded as "good," or "bad." And, no, those won't turn cancerous, because they are gone now; the doctor removed them during the colonoscopy. However, that is not to say that you will not have new polyps in the future--people who have had polyps in the past, are at increased risk for having polyps again.
Pencil thin stools (often referred to as "ribbon like") usually indicate inflammation; when the inside (the lumun) of the intestines are narrowed from swelling, the stool has difficulty passing, and thin stools and mucous typically result.
Bright red blood when you pass stool could be the result of severe inflammation in a localized area of your lower GI tract. Please let your doctor know that this is going on, and if you can't get an appointment soon, or your "complaints" are not taken seriously when you call, I suggest that you consider changing doctors.
Good luck!
Hope
i was told i had a good polyp too when looked this up and found out what i think dr was taling about there are a few sorts of polyp ,and there some that are more unlikely or very unlikely to become cancer and i think there the good ones