We aren’t currently testing every pregnant woman coming in to have a baby, though in an ideal world I would like to. In the interim, here’s some good guidance (see CDC link below) for all moms and dads of newborns, and if you can get a test kit, do one especially if you have any symptoms at all or a high risk exposure to someone who has been diagnosed!
https://www.cdc.gov/coronavirus/2019-ncov/if-you-are-sick/pregnancy-breastfeeding.html