Slight tension and slight discomfort in one of my ovaries 6 days after ovulation?

Probably normal: There would be a cyst on one of the ovaries at the time of ovulation. After ovulation, that cyst could enlarge to as big as 6 to 8 cm and still be normal.

Ovary pain: Most likely mild pain after ovulation. It should clear up in a few days. If not then consult with your doctor. If you miss your next period then start doing home test pregnancy tests.