A friend lent me her doppler and I'm having so much fun with it! The baby's heartbeat seems to range between 139 and 156. I had been picturing a very calm baby since my early ultrasounds all showed a little bean snuggled in the same position each time, but the baby was a little wiggler while I was listening to the heart beat a week ago. I was listening to it, then it disappeared all of a sudden with some swooshing noises and I found it a couple inches away a few seconds later. Guess he (or she) is getting more active - hope I can feel the baby's movements more consistently soon!