Heart rate generally increases during pregnancy, as the body works to pump blood to the parts of organs and placenta. Though there are many words to express the moment that you first hear your baby's heartbeat, most people utilize words like galloping to tells how the heart rate sounds. While the heart rate in pregnancy is faster than an adult's heart rate, the accuracy is that a common foetal heart rate changes during the stages of pregnancy and throughout the day. At about five weeks gestation, baby's heart starts to beat. At this point, a general foetal heart rate is about the same as the mother's: 70-75 beats per minute including the bpm. From this point, it will increase its rate of about three beats per minute per day throughout that first month. This is so exact that your doctor or midwife can utilize heart rate to help pinpoint the gestational age of baby via ultrasound radiation.