Heart Palpitations and the Menstrual Cycle
Do you notice your heart racing, pounding, fluttering or skipping beats before or during your period? Changes across the menstrual cycle can influence heart rate and the autonomic nervous system, and some women notice palpitations at particular times of the month.
However, palpitations should not automatically be blamed on hormones. Anemia, thyroid disorders, medicines, stimulants, anxiety and genuine heart-rhythm disorders can produce similar symptoms.
What to Know About Heart Palpitations and Your Period
- Hormonal changes across the menstrual cycle can modestly affect heart rate and autonomic regulation, and some women notice palpitations before or during their period.
- Menstrual timing alone does not prove that hormones are causing the palpitations. Anemia, thyroid problems, stimulants, anxiety and heart-rhythm disorders can produce similar symptoms.
- Heavy or prolonged periods can lead to iron deficiency and anemia, which may cause palpitations together with fatigue, weakness, dizziness or shortness of breath.
- New, frequent, prolonged or very irregular palpitations should be medically evaluated. Seek urgent care if they occur with chest pain, fainting, severe shortness of breath or severe dizziness.
What Happens During the Menstrual Cycle?
Hormone levels do not remain constant throughout the month. Estrogen and progesterone rise and fall as your body prepares for ovulation and a possible pregnancy.
Although cycle length varies from person to person, the menstrual cycle is commonly described in four overlapping stages: menstruation, the follicular phase, ovulation and the luteal phase.
Menstruation
Day one of bleeding is considered the first day of a new menstrual cycle. Estrogen and progesterone are relatively low around the beginning of menstruation.
Follicular Phase
The follicular phase begins with menstruation and continues until ovulation. Estrogen generally rises as a follicle develops in the ovary.
Ovulation
Hormonal signals trigger release of an egg. The timing of ovulation varies and should not automatically be assumed to occur on the same cycle day in every woman.
Luteal Phase
After ovulation, progesterone rises. If pregnancy does not occur, estrogen and progesterone eventually fall and the next menstrual period begins.
How Can Menstrual Hormones Affect Heart Rate?
Estrogen and progesterone interact with several body systems, including cardiovascular regulation and the autonomic nervous system — the system involved in controlling functions such as heart rate.
Studies using heart-rate and heart-rate-variability measurements have found that resting heart rate can be somewhat higher and vagally mediated heart-rate variability lower during parts of the luteal phase compared with earlier phases of the cycle.
This means that your cardiovascular measurements can change slightly across your cycle. It does not mean that every palpitation during the luteal phase is caused by progesterone or that an abnormal heart rhythm can be diagnosed from menstrual timing alone.
The relationship between reproductive hormones and actual arrhythmias remains an area of ongoing research.
Why Might Palpitations Feel Stronger Before Your Period?
Some women notice that palpitations become more frequent or noticeable during the late luteal or premenstrual part of their cycle.
Several mechanisms may contribute.
Changes in Heart Rate
Resting heart rate may vary modestly during the cycle, including increases during parts of the luteal phase in some women.
Autonomic Changes
Hormonal fluctuations may influence autonomic regulation, which can change heart-rate variability and potentially make heartbeat sensations more noticeable.
Premenstrual Symptoms
Poor sleep, stress, anxiety, discomfort, changes in caffeine intake and other premenstrual factors may also make palpitations more noticeable.
Look for a Pattern — But Don’t Assume the Cause
When a patient tells me that palpitations occur at the same point in every menstrual cycle, that timing is useful clinical information.
But menstrual timing alone cannot tell us whether the heart rhythm is normal. If episodes are recurrent, troublesome or associated with other symptoms, an ECG or ambulatory heart-rhythm monitor may be appropriate.
Other Causes of Palpitations Around Your Period
Palpitations occurring before or during menstruation can still have causes unrelated to the menstrual hormones themselves.
Iron-Deficiency Anemia
Heavy or prolonged menstrual bleeding can contribute to iron deficiency and anemia, which may cause palpitations, fatigue, breathlessness, weakness and dizziness.
Thyroid Disorders
An overactive thyroid and other thyroid abnormalities can affect heart rate and rhythm and should be considered when clinically appropriate.
Anxiety & Stress
Anxiety, emotional stress and panic can increase heart rate and make you more aware of your heartbeat.
Caffeine & Stimulants
Coffee, energy drinks, nicotine and some medications may contribute to palpitations in susceptible people.
Dehydration or Illness
Dehydration, fever and illness may raise heart rate and can contribute to noticeable palpitations.
An Arrhythmia
Premature beats, supraventricular tachycardia, atrial fibrillation and other heart-rhythm disorders can also cause palpitations.
Heavy Periods, Iron Deficiency and Heart Palpitations
If your periods are heavy, there is another important explanation to consider besides hormonal fluctuations: iron-deficiency anemia.
Repeated blood loss can reduce the body’s iron stores and, when sufficiently severe, reduce hemoglobin. Palpitations are one of the symptoms that can occur with iron-deficiency anemia.
Other possible symptoms include:
- Unusual tiredness or weakness
- Shortness of breath
- Dizziness or lightheadedness
- Headaches
- Paler skin than usual
- Reduced exercise tolerance
If you have heavy periods together with palpitations, fatigue or breathlessness, your doctor may consider checking a complete blood count and, when appropriate, iron studies.
What Can You Do About Period-Related Palpitations?
Treatment depends on the cause. If your palpitations are brief, mild and have already been medically assessed, several practical measures may help you identify or reduce triggers.
Do not start supplements, stop prescribed medication or take heart-rhythm medication solely on the basis of information from this page. Treatment should depend on the underlying cause.
When Should You Talk to Your Doctor?
Arrange medical assessment if your palpitations:
- Are new or becoming more frequent.
- Last longer than usual or repeatedly return.
- Feel very fast or distinctly irregular.
- Occur during exercise.
- Are associated with significant fatigue or weakness.
- Occur together with heavy or prolonged menstrual bleeding.
- Occur if you already have known heart disease or an arrhythmia.
- Are worrying you even if no emergency symptoms are present.
Depending on your history, your healthcare professional may consider an ECG, ambulatory heart monitoring, a blood count, thyroid testing or other investigations.
When Palpitations Need Emergency Care
Do not assume severe palpitations are caused by your period.
Seek urgent or emergency medical care if palpitations occur with:
- Chest pain or significant chest discomfort
- Fainting or loss of consciousness
- Severe shortness of breath
- Severe dizziness
- Feeling as though you are about to pass out
- Sudden severe or rapidly worsening symptoms
Menstrual timing does not rule out a heart problem or another medical emergency.
Heart Palpitations and Periods: FAQs
Is it normal to have heart palpitations before my period?
Some women notice palpitations before menstruation, and physiological studies show that heart rate and autonomic activity can vary across the menstrual cycle. However, recurrent palpitations should not automatically be considered normal or hormonal, particularly if they are new, prolonged or associated with other symptoms.
Can progesterone increase heart rate?
Resting heart rate tends to be somewhat higher during parts of the luteal phase, when progesterone is elevated. The relationship is complex, however, and progesterone alone should not be assumed to explain an individual’s palpitations.
Can low estrogen cause heart palpitations?
Changes in estrogen and progesterone can influence cardiovascular and autonomic physiology. Current evidence does not allow us to diagnose menstrual palpitations simply as a consequence of “low estrogen.” Other causes should be considered when appropriate.
Can heavy periods cause palpitations?
Heavy menstrual bleeding can lead to iron deficiency and iron-deficiency anemia. Palpitations, fatigue, breathlessness and dizziness can occur with anemia.
Should I have an ECG if my palpitations only occur before my period?
That depends on the pattern and severity of your symptoms, your medical history and associated warning signs. Your doctor may recommend an ECG or longer ambulatory monitoring if the episodes are recurrent or an arrhythmia is suspected.
Should I track my menstrual cycle when I have palpitations?
Yes. Recording your menstrual cycle together with the timing, duration and characteristics of palpitations can provide useful information for your healthcare professional.
Continue Reading
Evidence Used for This Article
- Serrano HM, Gueugneau N, Ravier G. Influence of menstrual cycle on autonomic nervous system, muscular strength and mood states. Scientific Reports. 2026. View study .
- Jasinski SR, Presby DM, Grosicki GJ, et al. A novel method for quantifying fluctuations in wearable-derived daily cardiovascular parameters across the menstrual cycle. npj Digital Medicine. 2024. View study .
- Schreuder MM, et al. Supraventricular tachycardia and the menstrual cycle. Case Reports in Women’s Health. 2019. View article .
- Cleveland Clinic. Menstrual Cycle: Overview and Phases. View resource .
- NHS. Iron Deficiency Anaemia. View resource .
- American Heart Association. Symptoms, Diagnosis and Monitoring of Arrhythmia. View resource .
- Mayo Clinic. Heart Palpitations: Symptoms and Causes. View resource .
Explore the full guide: Hormonal Heart Palpitations — Menstrual Cycle, Pregnancy and Menopause.