Baby Heartbeat During Pregnancy: When Does It Start?
One of the most exciting milestones in pregnancy is seeing and hearing your baby’s heartbeat for the first time. Many parents wonder about baby heartbeat during pregnancy and when it can first be detected.
The good news is that the baby’s heart begins developing very early. In most pregnancies, the fetal heartbeat can be seen as early as 6 weeks and 2–3 days during an ultrasound scan. Detecting the baby heartbeat during pregnancy is an important sign that the pregnancy is progressing normally.
At Nisarga Diagnostics, our advanced ultrasound services help monitor your baby’s growth and provide reassurance during the early stages of pregnancy.
Watch our video on :Baby Heartbeat During Pregnancy: When Does It Start?
When Does Baby Heartbeat During Pregnancy Begin?
The heart is one of the first organs to develop in a growing embryo. Around the fifth week of pregnancy, a simple heart tube begins to form. Soon after, it starts contracting and pumping blood.
By approximately 6 weeks of pregnancy, doctors can often detect the baby heartbeat during pregnancy using an ultrasound scan.
Although many people believe the heartbeat starts after three or four months, the heart actually begins functioning much earlier.
Key Facts About Baby Heartbeat During Pregnancy
- Heart development begins around Week 5
- The heartbeat may be visible from Week 6
- Early detection helps assess pregnancy health
- The heart is one of the first organs to function in the developing baby
Can a Dating Scan Detect Baby Heartbeat During Pregnancy?
Yes.
A Dating Scan is usually performed between 6 and 10 weeks of pregnancy and is often the first opportunity to see the baby heartbeat during pregnancy.
A Dating Scan helps:
- Confirm pregnancy
- Determine gestational age
- Detect the baby’s heartbeat
- Estimate the due date
- Assess early fetal development
- Confirm that the pregnancy is located inside the uterus
What Is a Normal Baby Heartbeat During Pregnancy?
The baby’s heart rate changes throughout pregnancy as the heart develops and matures.
| Pregnancy Stage | Normal Heart Rate |
|---|---|
| Around 6 Weeks | 90–110 bpm |
| 7–8 Weeks | 120–180 bpm |
| 9–10 Weeks | 140–170 bpm |
| Later Pregnancy | 110–160 bpm |
A healthy baby heartbeat during pregnancy is generally between 120 and 180 beats per minute during the early weeks.
Your doctor will interpret the results based on the stage of pregnancy and overall fetal development.
What If Baby Heartbeat During Pregnancy Is Not Seen at 6 Weeks?
Not seeing a heartbeat at exactly 6 weeks does not always mean there is a problem.
Possible reasons include:
- Pregnancy dates may be incorrect
- Ovulation may have occurred later than expected
- The embryo may still be too small to visualize clearly
- The pregnancy may be earlier than estimated
In such situations, doctors usually recommend a repeat ultrasound after one or two weeks.
A follow-up scan often provides a clearer assessment of the baby heartbeat during pregnancy and overall fetal growth.
Why Is Early Detection of Baby Heartbeat During Pregnancy Important?
An early pregnancy scan provides valuable information about both the mother and baby.
1. Confirms Pregnancy Viability
Detecting the heartbeat is one of the strongest early signs of a healthy pregnancy.
2. Helps Calculate an Accurate Due Date
A Dating Scan provides a more accurate estimate of the expected delivery date.
3. Detects Multiple Pregnancies
Early scans can identify twins or other multiple pregnancies.
4. Monitors Early Fetal Development
Doctors can assess whether the baby is growing appropriately for the gestational age.
5. Provides Reassurance to Parents
Seeing the baby heartbeat during pregnancy is often an emotional and reassuring experience for expecting parents.
When Should You Schedule Your First Pregnancy Scan?
Most women are advised to schedule their first ultrasound between 6 and 8 weeks of pregnancy.
You should consider an early pregnancy scan if:
- You recently had a positive pregnancy test
- You are unsure of your pregnancy dates
- You have a history of miscarriage
- You are experiencing pain or bleeding
- You want reassurance about your baby’s development
Early evaluation allows doctors to assess the baby heartbeat during pregnancy and ensure the pregnancy is progressing normally.
Conclusion
Understanding baby heartbeat during pregnancy can help parents feel more confident and informed during the early stages of pregnancy. In most pregnancies, the heartbeat can be detected as early as 6 weeks and 2–3 days, making it one of the earliest signs of healthy fetal development.
An early pregnancy scan plays a vital role in confirming the heartbeat, monitoring growth, and ensuring the well-being of both mother and baby.
If you are expecting, schedule your pregnancy scan at Nisarga Diagnostics for accurate imaging, expert evaluation, and compassionate care throughout your pregnancy journey.
Founder of Nisarga Diagnostics, is a renowned fetal ultrasound specialist with over 20 years of expertise. An alumnus of Government Medical Colleges in Mysore and Bangalore, he also holds a D.N.B. from the National Board of Examinations, Delhi, and certification from the Fetal Medicine Foundation, London. A former Professor and HOD, he has trained countless PG students and junior radiologists, shaping the future of fetal imaging in India.