We just purchased a Fetal Doppler, and it was the best decision & purchase we've made this far! I was able to find the heartbeat right away yesterday, and we heard the ever-so-fast thump thump thump of our little one's heart! I'm currently 9w4d (so I was able to hear it at 9w3d - yesterday). If any of you ladies are considering buying a Fetal Heart Rate Doppler I HIGHLY suggest it!!!