gfwife, I am in the exact same boat as you. I follow the diet except when we are out in public, or when my husband is out of town. I was asking myself the same thing as you, and my husband and I were just discussing this as well. I have done research and have come to the conclusion that we should stick as close to the 100% gluten-free diet as possible...a little slip here and there should be OK, however. DO NOT slip during breast feeding. The gluten can stay in breast milk for up to THREE MONTHS! There are many reports of newborn babies feeling very ill after ingesting contaminated breast milk. So, if newborns have gluten reactions, why not a fetus in the womb?
New research has emerged claiming that it can affect the baby. Gluten may stunt a baby's normal growth. My husband was born from a non-celiac mother. He had a normal birth weight but was short and still is below average in height...but he wasn't diagnosed until 2 years ago and had 25 years of gluten to stunt his growth! The research is still new and I am sure they won't know great details until a couple of years from now. Just keep going how you are. I know for myself, I will try to be as close to 100% gluten free as I can whenever I choose to become pregnant. Some gluten-free foods make me VERY ill and I will have to cheat the diet then, however. I figure, why not make it a safe environment from the start? Good luck and know that there are others out there with you!