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Baby heart rate dropped...is this normal?

The first time I heard my baby girls heart beat it was 174, I was 6 weeks. 2nd time it was 154, I was 11 weeks. It was in the 170's when I was 16 weeks. And today at my 20 week ultrasound it was 149!! I didn't really think about it while I was at the Dr until just now. And I'm worried of course. Should it drop that dramatically? She didn't say anything about it but I'm concerned and they will be closed until Friday :/

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EheartsZ07

Asked by EheartsZ07 at 7:19 PM on Jul. 3, 2013 in Pregnancy

Level 11 (502 Credits)
Answers (4)
  • I know a baby's heartrate does drop as it grows, but I'm not sure about the specific numbers. Why don't you find one of those Ask a Nurse hotlines in your phone book or online and call, just so you don't worry all weekend.
    Ballad

    Answer by Ballad at 7:22 PM on Jul. 3, 2013

  • 6 weeks of gestation where is usually around 100-120 beats per minute (bpm).

    This then increases progressively over the subsequent 2-3 weeks becoming 7

    ~ 110 bpm (mean) by 5-6 weeks
    ~ 170 bpm by 9-10 weeks
    This is followed by a decrease becoming on average.

    ~ 150 bpm by 14 weeks
    ~ 140 bpm by 20 weeks
    ~ 130 bpm by term
    tntmom1027

    Answer by tntmom1027 at 7:35 PM on Jul. 3, 2013

  • Wow. Google is amazing isn't it?
    PartyGalAnne

    Answer by PartyGalAnne at 1:41 AM on Jul. 4, 2013

  • No need to worry unless it was below 100. if the doctor expressed no concern there's no need for you to worry.
    2autisticsmom

    Answer by 2autisticsmom at 5:11 PM on Jul. 4, 2013

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