My LO's heartbeat fluctuates so much when I'm at the hospital or the doctor's office. One week it will be 148, the next it will be 160, during the ultrasound it was 144, and just last Monday at my check-up it was 150. Lol...so I'm not sure exactly what it is. The doctors did tell me that when she is resting is when it's low, like the 140's and when she's active and kicking it's in the higher amounts. They said it was good to fluctuate. I wouldn't worry at all about your baby's heartbeat being slow....he/she could just be sleeping!
