At-home pregnancy tests promise 99 percent accuracy. But the best time to take a pregnancy test and get the most exact result depends on when you conceive.

When Katy Perry feels sentimental about her pregnancy with now 4-year-old daughter Daisy Dove, she has one unusual memento she can turn to: her old pregnancy test! The "Woman's World" singer revealed ...

Pop princess Katy Perry has revealed the unique place she keeps her positive pregnancy test. The test was the one that first told her she was pregnant with her now 4-year-old daughter, Daisy Dove. The ...