Could a positive result be wrong?

That's rare. But it is possible to get a positive result from a home pregnancy test when you're not pregnant. This is called a false-positive.

A false-positive might happen if you had a pregnancy loss soon after the fertilized egg attached to the uterine lining. You also may get a false-positive if you take a pregnancy test soon after taking fertility medicine that contains HCG. Problems with the ovaries and menopause also might lead to a false-positive test result.