It is possible to listen to the fetal heart with a stethoscope, but it is divided into different weeks of pregnancy. There are usually 3 ways to listen to the fetal heartbeat, one is ultrasound, one is Doppler fetal heartbeat stethoscope, and one is a general stethoscope. When the gestational week is small, you usually need ultrasound to see the heartbeat of the fetus. At 12 weeks of pregnancy, the fetal heartbeat can be heard in the abdomen of the pregnant woman with a Doppler fetal heart rate stethoscope. A stethoscope is usually used after 18-20 weeks of pregnancy to hear the heartbeat through the abdominal wall of the pregnant woman. The sound of the fetal heartbeat is usually binaural, like the sound of a clock ticking, and is relatively fast, normally 110-160 beats per minute. However, it is a little more difficult to listen to the fetal heart sounds with a stethoscope, and the fetal heart sounds should be distinguished from the murmur of the uterus, the murmur of the abdominal aorta, and the murmur of the umbilical cord.