Your pregnancy journey starts with a positive pregnancy test. That is the first of many tests offered throughout your prenatal care. Some tests diagnose conditions you may have during pregnancy, and others look for genetic abnormalities in your baby. Results from some tests may even impact your birth. Tests are valuable tools, but they can also create anxiety and stress during your pregnancy. This article is a guide to your prenatal testing options with tips to understand and navigate tests for you and your baby during pregnancy.