High Heart Rate in Pregnancy: Why Does It Happen and When Should You Get Checked?
A high heart rate during pregnancy is a common experience for many moms-to-be. Most of the time, an elevated heart rate reflects your body’s natural adjustment to the changes of pregnancy. Yet, there are times when it makes sense to check in with your doctor.
If you notice your heartbeat feels faster—even while resting—try not to worry right away. In most pregnancies, a higher pulse is simply a response to hormonal and circulatory changes, and rarely signals a major problem on its own.
What Is Heart Rate and How Does It Change in Pregnancy? 💓
Your heart rate is the number of times your heart beats per minute. For healthy adults at rest, this is usually about 60–90 beats per minute. During pregnancy, your blood volume increases by 30–50%, which means your heart has to work harder.
This added workload can raise your heart rate by 10–20 beats per minute. So, for many pregnant women, a pulse between 80–100 beats per minute is perfectly normal, especially in the second and third trimesters.
Biological Background
Pregnancy hormones (especially progesterone), expanded blood vessels, and higher blood volume all contribute to this increased heart rate. This allows your body to supply enough oxygen and nutrients to your growing baby.
What Counts as a High Heart Rate While Pregnant?
When you’re at rest—not exercising or under stress—a heart rate over 100 beats per minute is considered elevated. If your resting heart rate stays above 110–120 beats per minute, especially if you have other symptoms (like dizziness, fainting, or shortness of breath), it’s important to talk to your doctor.
👀 What to Watch For:
- Always measure your heart rate while at rest (for example, right after waking up)
- Note how long your heart rate stays high, and if you notice any other symptoms
- Don’t panic if your pulse is occasionally high—it’s usually normal, but keep an eye on patterns and other signals
Everyday Triggers for a High Heart Rate 🏃♀️
- Physical activity: Even a short walk or climbing stairs can make your heart beat faster
- Strong emotions: Stress, excitement, or anxiety may raise your heart rate
- Dehydration: Not drinking enough water or being overheated can increase your pulse
- Mental stress: Worrying about your baby or missing sleep can affect your heart rhythm
When Can High Heart Rate Be a Cause for Concern?
A consistently high heart rate above 120 beats per minute, or a sudden rapid heartbeat along with dizziness, fainting, shortness of breath, chest pain, or difficulty breathing, needs prompt medical assessment.
Be extra careful if:
- You have a known heart condition or circulation problem
- You experience repeated panic attacks
- Your rapid heart rate is new or comes with other unexplained symptoms
Possible Risks to Consider ‼️
Although a high heart rate in pregnancy is usually harmless, persistent or severe elevation may point to an underlying health issue:
- Heart rhythm disorders (arrhythmia)
- Anemia (low red blood cell count)
- Overactive thyroid (hyperthyroidism)
- Infection or dehydration
- Chronic fatigue or lack of rest
Managing these conditions should always be medically supervised.
What Can You Do If Your Heart Rate Feels High? 🧘♀️
- Sit or lie down and take a few deep breaths
- Drink a glass of water and use a simple relaxation technique
- Avoid caffeine, energy drinks, and foods that overstimulate
- Notice when and in what situations your symptoms appear
- Prioritize rest and try to reduce sources of strong stress
If your heart rate remains high for no obvious physical or emotional reason, or if it’s making you uncomfortable, be sure to notify your doctor.
When Should You See a Doctor?
Seek immediate medical help if:
- Your high heart rate is accompanied by chest pain, dizziness, shortness of breath, or fainting
- You have a known heart or metabolic condition
- The character or severity of your symptoms changes over a few days
Bringing up the issue at your regular prenatal appointment is also helpful. Your doctor may recommend tests such as an EKG or blood work to determine the cause.
Why You Usually Don’t Need to Worry
Your body is incredibly adaptable, and during pregnancy, your heart is working its hardest to support you and your baby. A mildly increased heart rate is almost universal among expectant mothers and often balances out on its own.
Simple lifestyle changes—more rest, relaxation, and hydration—can make a big difference.
Daily Emotional Support 💗
If your high heart rate makes you anxious, remember that many other parents feel the same way—and most of the time, it’s not a sign of anything serious. Your body is doing amazing work each day to care for you and your baby.
Accurate, step-by-step information can help you feel more confident throughout your pregnancy. You’ll also find guidance from us for understanding other symptoms, navigating lifestyle changes, or managing worries.
If you’d like even more reliable, day-to-day support, try our app for trusted pregnancy resources every step of the way.