You cannot hear the fetal heartbeat by yourself at 10 weeks of pregnancy, and you can only observe the fetal heartbeat through ultrasound. The embryo’s primitive heart tube beat can be observed by ultrasound around 6 weeks of pregnancy. By the end of the 8th week of pregnancy, the fetal heart has formed, and fetal heart sounds can usually be heard through the abdominal wall of the pregnant woman using a Doppler fetal heart stethoscope around the 12th week of pregnancy. However, in some cases, it may take longer to hear the fetal heart. The fetal heart is a two-tone sound, similar to the “ticking” of a clock, and is fast, normally between 110 and 160 beats per minute. The fetal heart rate is fast, normally between 110 and 160 beats per minute. When listening to the fetal heart, it should be differentiated from uterine murmurs, abdominal aortic sounds, and umbilical cord murmurs. After 34 weeks of pregnancy, electronic fetal heart monitoring can be used to monitor the fetus in the uterus to assess whether the fetus is suffering from hypoxia.