C.G.
The concern with nipple shields is that they can affect baby's ability to remove milk from the breast and thereby decrease your milk production. I think the best practice is to put a nipple shell on prior to nursing to draw the nipple out, then latch using nothing on the nipple. Baby will naturally draw the nipple out if they can get latched on. I would recommend attending a La Leche League meeting prior to giving birth, they can be a great help with creative solutions for issues like this. Good luck!