The BOND study is being done to find new ways to support mothers and their babies after CHD diagnosis. The BOND study has two parts. One part, HeartGPS, will look at how a new emotional support program may help mothers adjust to their baby's diagnosis during pregnancy and after birth. The second part, Direct Breastfeeding will look at how to support mothers who breastfeed. Both parts will look at how these new support programs may improve the well-being of mothers and the bond between mother and baby.