It is safe for a pregnant woman to eat honey during pregnancy. For babies, honey os not safe because it carries certain bacteria that can infect a baby with boitulism. This is because a baby can grow these bacteria in their intestinal system and become sick with them
Pregnant woman are safe because this condition does not affect them. Healthy adults can eat honey, even during pregnancy. In addition, honey sold in stores is usually treated and pasteurized not just to prevent these infections but mostly to kill yeast so honey will not ferment and stay liquid longer. Honey in stores is usually pasteurized, while honey sold on farms or farm stands may not be pasteurized, though even unpasteurized honey is considered safe as compared to unpasteurized cheese which is not considered safe.