At 10w my internal ultrasound showed a heartbeat of 163. Today st 14w2d, the doctor used to the Doppler to check heartbeat. At first he couldn't find it so I was dying. Then he finally found it and it was 135. Of course I freaked out. He said that it was good. Just depends on activity level and the baby is probably sleeping. Needless to say, I'll be worrying until my next ultrasound in January. Has anyone else experienced this?
Re: Slower Heartbeat
DST T4L
As other PPs have noted, fetal heart rate varies by a lot of factors (like the activity of the fetus at the time of measurement), but it also peaks at about 170 at 9-10 weeks and then gradually falls after that.
Married 5/30/15
TTC #1 June 2015
BFP #1 9/28/15, EDD 6/10/16. DS born 5/23/16!
TTC #2 May 2017
BFP #2 m/c 11/18/17 5w5d
BFP #3 12/17/17 EDD 8/25/18. It's a boy!