An embodiment of the invention relates to an apparatus comprising: a flexible sleeve configured to envelop at least a portion of a uterus and an adjustable pressure applicator configured to provide pressure on a uterus of a patient. According to an embodiment of the invention, the pressure applicator is a bladder adapted to receive and dispel a fluid. Embodiments of the invention relate to use of the apparatus to control post partum hemorrhage, in particular, after caesarean section delivery.