Q: Don't all women ovulate on day 14 of the menstrual cycle? Why should I test with my ovulation predictor kit as early as day 9?
A: The ideal ovulation cycle has 28 days with ovulation being day 14. However, not all women's cycles are 28 days. Some women may ovulate earlier or later than day 14; it is critical to know precisely when ovulation occurs. Testing early may detect an early sign of ovulation.