Condition of a parturient woman has been good for 2 hours after live birth: uterus is thick, globe-shaped, its bottom is at the level of umbilicus, bleeding is absent. The clamp put on the umbilical cord remains at the same level, when the woman takes a deep breath or she is being pressed over the symphysis with the verge of hand, the umbilical cord drows into the vagina. Bloody discharges from the sexual tracts are absent. What is the doctor's further tactics?