Will Certain Problems Cause Colon Cancer Later In Life?

I have a problem where I get stopped up for almost a week and sometimes longer. I know that is not healthy so I buy stool softeners and/or laxatives but I heard that being that stopped up can build bacteria in your intestines and then taking something to clear it can rip the innerlining of your intestines allowing that bacteria to enter the bloodstream and likely cause colon cancer. I just wanted to know if this was true.