The risk of premature childbirth, the pain of labor programmed since earliest childhood, and even the risk of breech delivery in the three last weeks of pregnancy are obstetric problems for which scientific literature turns to the role of psychological factors and the effectiveness of appropriate intervention when no biological cause can be identified. The great physical and psychological relaxation obtained through suggestion and sound explains the effectiveness of suggestions directed at uterine relaxation and perineal comfort. For use after the third month of pregnancy.