A fetal heart rate measuring assembly (1) comprising an ultrasound transducer (71) adapted to perform fetal heart rate measurements when attached to the abdomen of a pregnant woman, a logic unit (31) connected to the ultrasound transducer (71), a battery (39), and a measurement presentation unit (35), wherein the entire assembly (1) is adapted to be attached to said pregnant woman. The assembly further comprises an accelerometer (73) adapted to sense movement of the pregnant woman.