There are a variety of opinions on this topic, and it is important to consult with a healthcare professional before making any decisions. Some sources say that pregnant women can eat flan in moderation, while others recommend avoiding it altogether. Flan is made with eggs and milk, which can increase the risk of foodborne illness if they are not cooked properly. Additionally, the sugar content in flan may contribute to gestational diabetes or weight gain. Ultimately, it is up to the pregnant woman to decide whether or not she feels comfortable eating flan.