Healthy parturients with a singleton pregnancy will be included within 48 hours after delivery.Participants will complete structured questionnaires that focus on several dimensions of fatigue and mental health ( Multidimensional Fatigue Inventory , Edinburgh Postnatal Depression Scale and the Postpartum Questionnaire ) , at inclusion and at follow-up visits after three days , one week , three weeks , eight weeks , and 12 weeks postpartum .