Each stage of human life has its own specific macronutrient and micronutrient requirements. In addition, a number of situations can affect the general state of a pregnant or breastfeeding woman, requiring an adaptation to her diet.
For pregnant and breastfeeding women, these include nausea and vomiting, constipation, a reduced or greatly increased appetite, fatigue, foods putting you at risk of food poisoning, specific nutrients with increased requirements during the period of conception, and so on.
A nutritionist can reassure, advise and support you in every situation.