This cross-sectional work studies the prevalence of post-partum blues on days 3 and 5 after delivery and the links between post-partum blues and depressive symptomatology, using standardised interviews and rating scales (Kennerley and Gath Blues Scale. MADRS) to screen a consecutive series of 104 women on days three and five after a normal delivery. This study stresses the possibility of a difference between the symptomatology of a benign "classical" post-partum blues, and that of a more intense blues closer to the spectrum of depressive mood disorders and perhaps post-natal depression.