I've had ovarian cancer when I was younger, am I more likely to get colon polyps?

No. The majority of ovarian cancers that young women get (germ cell tumors or stromal cell tumors) are not associated with colon cancer or colon polyps.
Not likely. Ovarian cancer occurs in the female reproductive system and is not likely to cause an increase in colonic polyps as the colon is a separate and distinct part of the gastro-intestinal system.