Heart palpitations in perimenopause: what your watch can’t tell you

You’re sitting still, maybe just drifting off, and suddenly your heart is pounding, fluttering, or skipping — over nothing. It is one of the most unsettling parts of perimenopause, partly because it arrives without a reason you can point to. You are not being dramatic, and you are not imagining it. There is a plausible reason your heart feels different right now, and your watch has been quietly keeping the numbers.

What palpitations usually are

A palpitation is simply an awareness of your own heartbeat — fast, hard, or irregular. Around perimenopause they are common, and there is a mechanism behind them: as estrogen fluctuates and falls, the balance of your autonomic nervous system tends to tip toward its “accelerator,” and your resting heart rate can drift upward with it. The American Heart Association describes this transition as a genuine window of cardiovascular change — not to frighten you, but because it is a moment worth paying attention to. You can see the research collected on the science page.

What your Apple Watch can actually tell you

Your watch measures your heart rate continuously and logs your resting heart rate overnight, when you are most still. Over weeks it builds a picture of your baseline — and it can flag when your rate runs unusually high or low, or capture an ECG if you start one during an episode. In wearable studies, resting pulse has been shown to shift measurably with hormonal phase, so a baseline that has crept up over months is a real, readable change, not your imagination. You can see exactly how the watch measures this, and where it falls short, on the resting heart rate signal page.

What it can’t tell you

Here is the honest part. Your watch can tell you that your heart rate rose. It cannot tell you why it rose, whether a flutter was a harmless extra beat or something that deserves a closer look, or what any of it means for your health. It is not a cardiologist, and neither is Perigee. Most palpitations in this stage are benign — but chest pain, fainting, breathlessness, or a racing heart that will not settle are reasons to seek medical care promptly, not to reach for an app. If palpitations are frequent, bringing your watch’s heart-rate history to your clinician gives the conversation something concrete to work from.

How Perigee reads it

Perigee doesn’t score your heart or sound alarms. It reads your resting heart rate against your own recent baseline and, when it drifts, says so in a plain sentence with an honest confidence level — for example, that your rate held a few beats above your usual range overnight, which often tracks with a warm night or a short one. It is an observation to explore, never a diagnosis. And a racing heart rarely travels alone: it often arrives with a hot flash or a broken night, and seeing those line up is exactly what this stage makes hard to notice on your own. If your nights are fragmented too, the 3 a.m. wake-up is a close cousin of this.

One gentle thing

You don’t need to overhaul anything today. If palpitations show up often, it can help to jot down when they happen — after coffee, in the small hours, in the days before your period — and let your watch keep the heart-rate record alongside. A pattern you can point to is far more useful in a ten-minute appointment than “my heart sometimes races.” And if anything about an episode frightens you, trust that instinct and get it checked.