The diminution of the average length stay (ALS) in French maternity is a clear evolution, the objective of the draft law on social security is to reduce the ALS to equal other OECD countries. The over-medicalization of maternal health raises the question of relevant and iatrogeny of Professional practices. Furthermore, pregnant woman, future parents expressed their wish for an individual support and more physiological respectful. A more-effective Professional coordination is expected where the midwife is a major player.

The aim of the study is to identify and evaluate an outpatient birth path during the first 24 hours after the birth.

Inclusion Criteria:

• With no multiple pregnancy, of less than 20 weeks of gestation
• With a BMI between 17,5 and 35 kg/m²
• is able to understand research's informations
• affiliated member of the social security system
• Have given an informed consent

Exclusion Criteria:

• With psychological vulnerability, social vulnerability, addictions and high dependency
• With an unbalanced chronic pathology or susceptible to contraindicated a physiologic birth
• With history of caesarean, foeto-maternal incompatibility, gestational hypertension, pre-eclampsia, HELLP syndrome or retro-placental hematoma, sphincter tear
• With history of birth with perinatal asphyxia and sequelae or an unexplained perinatal death
• With history of puerperal psychosis
• Under guardianship

Pregnant woman