The most significant difference between organic and nonorganic produce is that the former often tastes better than the latter. The differences in nutrient content are not really significant.
There may be some pesticide residues on nonorganic produce, but this can be minimized by washing, peeling, or when appropriate, cooking the food. Eating only produce grown in the United States will greatly reduce your risk of exposure, because much of the worst pesticide contamination comes from imported produce.
The most important thing, however, is to eat five to nine servings of fruits and veggies each day. If you're on a tight budget, you don't have to limit yourself to the organic section.
Morning cup of coffee during pregnancy
Perm during pregnancy
Sushi for pregnant woman
Spicy foods during pregnancy
Raw oysters during pregnancy
Meat from livestock that were given antibiotics for pregnant woman
Deli meats for pregnant woman
Cured or smoked foods for pregnant woman
Blackened foods during pregnancy
Vegan diet during pregnancy