When it comes to enjoying sweets, it is all about moderation, whether you are pregnant or not. "The only problem with sweets is if you eat too much," confirms Dr. Weiss. In fact, dark chocolate specifically may even be good for mom and baby, according to research. "Excess sugars can lead to insulin resistance," Dr. Weiss still warns. "Which can lead to excessive weight gain, diabetes, and high blood pressure. Also if you are replacing protein and fats with only sugars...then that's bad, too!"