Taking a pregnancy test too early can procure a false negative result. How do you know when it's time to take one?

Taking a pregnancy test can make a woman’s heart race. Some test-takers are desperate to see two lines or a plus sign — any indication that big changes lie nine months down the road. Others are just ...

You're probably familiar with the scene. Pulling the little box out of the drug store bag, ducking into the bathroom, and then waiting and staring at a little plastic stick waiting for it to change.