Medically reviewed to ensure accuracy.

It’s one of the most reassuring sounds there is.

When does your baby have a heartbeat?

fetal circulatory system

The ultrasound will also confirm yourestimated due date, and how many babies you’re carrying.

When can you hear a babys heartbeat?

Can’t hear the heartbeat yet?

fetal circulatory system

At your next appointment, your practitioner will check to confirm everything is okay.

Chances are, you’ll be able to hear some comforting sounds then.

That’s about twice as fast as yours!

fetal circulatory system

At around week 20, it’ll go down to about 140 beats per minute.

When can you hear your babys heartbeat with Doppler?

You’ll most likely hear fetal cardiac activity with aDopplerat around the 15-week mark.

fetal circulatory system

Plus, it can be hard to use an at-home Doppler properly without training.

You could, for example, mistake your own heartbeat for your baby’s.

At week 5, the preliminary structures that will become your baby’s heart begin spontaneously pulsing.

fetal circulatory system

Precursor blood vessels also begin to form in the embryo during the first few weeks.

(Up until this point, the cardiac electrical activity occurred spontaneously.)

Capillaries also form at an exponential rate during the second trimester.

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Between 17 and20 weeks, the heart chambers have developed enough to appear more clearly on an ultrasound.

Since babies don’t breathe in utero, the lungs don’t actually function before birth.

All systems are go!

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From the time you get your positive pregnancy test, your baby’s heart is developing and changing rapidly.

And enjoy these milestones along the way.

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