The heart beat is the important of life the movement of person is living there is a heart which is beating and we love to hear that heart beat whether its our own whether its on unborn baby its a magical experience lots of parents wait for that movement.The embryo's heart begins to beat around 6 weeks of pregnancy – sometimes earlier, sometimes later. A transvaginal ultrasound (an internal ultrasound) can detect a heartbeat around 6 weeks of pregnancy