There are few things harder than going through the joy of finding out you're pregnant only to have a miscarriage. But miscarriage is incredibly common, affecting about one in five women. Here's what you need to know about it -- why miscarriage happens, what the signs are and what you can do to raise the odds that you'll have a healthy pregnancy the next time around.
What Is a Miscarriage?
A miscarriage, medically known as a spontaneous abortion, is a pregnancy that ends by itself within the first 20 weeks of pregnancy. If a pregnancy ends after 20 weeks, that's considered a stillbirth, according to the March of Dimes.