Loose milk is also known as milk leakage, which means that milk flows out on its own without external pressure or stimulation. It can occur around 3 or 4 days after delivery, when milk starts to be secreted, as a result of irregular milk secretion when the milk ducts have just been opened. During this time, women should try to empty both breasts regularly and use anti-overflow pads to avoid the inconvenience of breast leakage.