The present invention relates to a breast status determination device (10'). The breast status determination device (10') comprises a breast shield (16'), a nipple elongation measurement unit (17'), and a breast status determination unit (20'). The breast shield (16') can receive a breast (12) of a user (14) therein. The nipple elongation measurement unit (17') can measure an elongation of a nipple of the breast (12) received in the breast shield (16') for a specific pressure in the breast shield (16') during a milk extraction session. The breast status determination unit (20') can determine a status of the breast (12) based on the elongation of the nipple (26). The breast status determination device (10') can allow estimating the amount of milk left in the breast during the milk extraction session, when the breast (12) is empty, and whether a milk ejection reflex is present or absent in the breast (12).
