FIELD : medicine.SUBSTANCE : invention relates to medical equipment. Uterine monitoring system (1000) comprises an intrauterine insertion device (100) for placement in the uterus, accommodation module (200) for detachable connection to the intrauterine insertion device, a system control device (300) and display (400). Protruding portion of the intrauterine insertion device comprises a sensor and is configured to bend when connecting the intrauterine insertion device with the placement module so that a protruding portion of the insertion device passes along the vagina, cervix and inside the uterus. System control device is functionally connected for continuous reception of signals from the sensor and for their conversion into data representing these signals. Display is functionally connected to display data from system control device.EFFECT : providing continuous monitoring for long periods of time in order to optimize the preparation process for fertilization, as well as to mitigate side effects.24 cl, 13 dwg