After ovulation, many people use ovulation test strips to detect whether a planned pregnancy is underway. However, some people may find that after the ovulation period, their ovulation test strips appear white, which means they may have missed the best time to get pregnant.

If women still can't detect pregnancy after ovulation, they may need to take other methods to detect if a planned pregnancy is underway. These methods include using HCG detection agents, blood or urine tests, etc.

Additionally, if women are still unable to detect pregnancy after missing the best time to get pregnant, they may need to consult a doctor to determine if there are other issues, such as egg quality or physical health issues. The doctor may recommend other tests or treatments to help them get pregnant as quickly as possible.

To sum up, if you use an ovulation test strip after the ovulation period and it turns out to be white, don’t worry too much. This doesn't mean they can't get pregnant, but it means they missed the best time to get pregnant. If women can't detect their pregnancy, they may need to take other steps to detect it and talk to their doctor to determine if there are other problems.