There's something transformative for me when I hear the baby's heart beating; it makes the pregnancy and the baby seem more real. I haven't felt any definite movement yet, and I'm just barely starting to poke out (nothing that anyone on the street would even notice). So to have that undeniable evidence that a baby is really inside of me is always really cool.
midwife listening with a fetoscope
if you want to listen to your baby's heart, press the forehead rest against your palm
pictures from Loving Hands MidwiferySpeaking of fetoscopes, I bought mine new on Ebay for $13. They're hard to find on Ebay right now, but Cascade carries them starting at $16. Make sure you buy the one with 22" tubing, not 7", otherwise it won't be long enough for you to listen to your own baby. I think it's a great thing for every pregnant woman to have and know how to use. It's fun of course, but on top of that if you have any questions about the baby's well-being you don't have to wait for a prenatal appointment to listen to heart tones.