Heart palpitations before your period: why it happens and what helps

Your heart can race or pound in the days before your period because estrogen and progesterone drop sharply as you move into the week before bleeding. Estrogen affects the signals that speed up or slow down your heart, and that drop can show up as a faster pulse, a skipped beat, or a fluttering feeling in your chest. A 2017 review in the Cochrane Database of Systematic Reviews describes PMS as a reaction to ovulation, with ovarian hormones acting on the same chemical systems that manage mood and body sensations. The review doesn't look at heart symptoms specifically, but a racing heart often shows up alongside the anxiety and irritability it does describe. That's why a racing heart before your period often shows up next to anxiety, irritability, or a sense of dread, rather than appearing on its own.

Your heart isn't working harder in an unsafe way. The hormone shift makes you more aware of each beat, and it can make the rhythm feel less even for a few hours at a time. For most women this settles within a few days of their period starting, which is also the clue that hormones, rather than a heart condition, are driving it.

Yes. A racing or pounding heart is one of the physical symptoms some women notice as part of PMS, alongside bloating, breast tenderness, and headaches. It isn't as commonly listed as cramps or mood swings, but it follows the same timing. It shows up in the luteal phase and eases once your period starts or soon after.

If you want the fuller picture of PMS, including which symptoms count and how common they are, premenstrual syndrome, explained is the place to start.

Palpitations on their own, without a past heart diagnosis, are rarely something to worry about. What matters is the pattern. If it shows up the same week every month and fades once your period arrives, that points to PMS rather than a separate heart problem.

Premenstrual palpitations usually start in the luteal phase, the one to two weeks between ovulation and your period, and they tend to ease within a few days of bleeding starting. For some women it's the last three or four days before their period that feel the worst; for others it starts earlier and builds.

Because the exact timing varies from person to person, tracking a cycle or two is the fastest way to see your own pattern. The PMS calculator can give you an estimated window based on your cycle length, so you know roughly when to expect it next.

For more on why this particular phase affects your heart rate the way it does, heart palpitations in the luteal phase covers the hormone timeline in more detail. If your palpitations show up outside that window, or don't ease once your period starts, that's worth mentioning to a doctor rather than assuming it's PMS.

A racing heart in the days before your period is common and, on its own, usually not a sign of a heart problem. Your body is reacting to a steep hormone drop, and the feeling of each beat becomes more noticeable rather than your heart actually working overtime.

It stops looking normal in a few specific situations, covered in when palpitations need medical attention, below.

Most women find it's uncomfortable rather than dangerous, a fluttering or pounding feeling that passes once they've sat down, slowed their breathing, or let the wave pass. If it's happening every cycle and interfering with your sleep or your day, that's useful to track and bring to a doctor.

Both PMS and early pregnancy can raise your heart rate, so palpitations by themselves don't tell you which one you're dealing with. In pregnancy, blood volume increases early on and your heart pumps faster to move it, which can feel like the same fluttering or pounding you'd get from PMS.

The clearest signal is your period. If it's late and you've had unprotected sex, a pregnancy test will settle the question faster than guessing from symptoms. If your period arrives on schedule and the palpitations ease once it starts, PMS is the more likely explanation.

PMS or pregnant? How to tell the difference goes through the other overlapping symptoms, like breast tenderness, fatigue, and nausea, and where they actually differ. Palpitations alone are common to both, so lean on timing and a test rather than how your chest feels.

Palpitations rarely show up alone. The same hormone drop that speeds up your heart also affects the chemicals tied to anxiety and irritability, so a racing heart often arrives with a racing mind, worry, a short fuse, or a feeling that something's wrong even when nothing is. That overlap is part of why PMS feels like a whole-body experience rather than a physical symptom list.

For some women, palpitations show up alongside the more severe mood symptoms that mark PMDD rather than PMS, though there's no research comparing how the palpitations themselves differ. PMDD heart palpitations: what it feels like and what helps covers that pattern specifically, including how it differs from the milder version most women get.

Niyora is a PMS and PMDD support app. If your heart is racing and your mind is too, its Moon tool can help you write down what's happening, see it from another angle, and calm down before you react. Its estimated PMS window can also show whether this week matches your usual pattern, which is useful to know in the moment and worth mentioning to a doctor.

See a doctor if your heart palpitations happen outside the week or two before your period, if they come with chest pain, fainting, or real shortness of breath, or if they're new and you've never had them before. Any of those points away from a simple hormone pattern and deserves a proper check.

If the palpitations happen every cycle, take a week to settle, or come with mood symptoms severe enough to disrupt your work or relationships, bring two months of daily notes on when they start, how long they last, and what else you're feeling. That record makes it much easier for a doctor to tell a hormonal pattern from something else.

If you're not sure whether what you're feeling fits PMS or something more, how much is PMS affecting you? can help you put words to the pattern before that appointment.

Heart palpitations before your period haven't been studied as their own topic the way cramps or mood symptoms have, so there's no large trial measuring them directly. What we do have is research into why PMS happens at all. A 2017 review in the Cochrane Database of Systematic Reviews describes PMS as a reaction to ovulation, where ovarian hormones interact with the same chemical systems that regulate mood and bodily sensations, which fits with palpitations showing up alongside anxiety and irritability rather than on their own.

Separately, a 2018 randomized trial in Archives of Gynecology and Obstetrics found that women with PMS who did regular swimming had far less anxiety and tension by the end of the study than women who didn't exercise. A smaller 2017 yoga trial found a similar pattern. Neither trial measured palpitations specifically, but easing the anxiety that often rides alongside a racing heart is a reasonable reason to try movement in your luteal phase, alongside whatever helps you calm down in the moment.