I've had 2 other kids. First one, daughter was 141bpm at her ultrasound. Son was 146bpm at his ultrasound. This time, my daughter was 167 at her first ultrasound (10 weeks)..not sure about other ultrasounds...but it now ranges from low 120s to 140s. So don't count on the heartbeat as being a judge of the sex. I think normal is from 120-160 or so (under and above these numbers being fine too, as long as not too low).

Cath