Cold symptoms before your period: why it happens and what helps

Feeling cold or getting chills before your period isn't on most standard PMS symptom lists, but it may be connected to the same hormone swings that drive other PMS symptoms. After ovulation, progesterone rises and nudges your core body temperature up slightly, the same shift that fertility trackers use to confirm ovulation happened. In the days before your period, both progesterone and estrogen fall sharply. That drop can throw off how your body regulates temperature, so you might feel chilled even in a warm room, or notice your hands and feet going cold more easily.

This sits alongside the physical and emotional symptoms of PMS. A Cochrane review describes PMS symptoms, including bloating, breast tenderness, and sleep disturbance, recurring in the one to two weeks before a period and easing once bleeding starts (Cochrane Database of Systematic Reviews, 2017). Cold sensitivity hasn't been studied on its own, but anecdotally it tends to follow the other PMS symptoms that do show this luteal-phase pattern, building before your period and easing once it starts.

Cold-like PMS symptoms usually start in the luteal phase, the one to two weeks between ovulation and your period. For most women, the chills, achiness, or feeling easily cold build gradually and peak in the final few days before bleeding starts. PMS symptoms recur during the luteal phase and reduce by the end of menstruation, a pattern seen across both the physical and mood symptoms of PMS (Cochrane Database of Systematic Reviews, 2017).

The exact timing differs cycle to cycle and woman to woman. Some notice it a full week out, others only in the last two or three days. If you want a clearer sense of your own pattern, a PMS calculator can estimate when your PMS window is likely to start based on your cycle length, so a cold spell doesn't catch you off guard.

Early pregnancy can also make you feel unusually cold, or alternately flushed and chilled, because progesterone rises further once a fertilized egg implants and stays high instead of falling. That overlap makes it easy to confuse premenstrual chills with early pregnancy, especially if you're also tired, bloated, or more emotional than usual.

The clearest way to tell them apart is timing. PMS symptoms, including feeling cold, ease within a day or two of your period starting. Pregnancy symptoms don't ease. They continue and often intensify over the following weeks. A missed period is the other clear marker. If your period arrives on schedule, the cold spell was almost certainly PMS. For a fuller comparison, see PMS or pregnant? How to tell the difference.

The same hormone swings that affect your temperature regulation also affect mood. Estrogen and progesterone interact with brain chemicals, and PMS is thought to come from ovarian hormone changes interacting with neurotransmitter systems, rather than from one hormone simply being too high or too low (Cochrane Database of Systematic Reviews, 2017). That's one reason a cold, shivery day before your period often arrives alongside irritability, low mood, or feeling more tender than usual.

Noticing both together tells you something real. If you track when the chills show up against when you feel more reactive or tearful, you'll likely see they cluster in the same few days each cycle. Start with what you are feeling walks through how to notice that pattern in your own body and mood, instead of treating each symptom as a separate mystery.

Most premenstrual chills and cold spells are harmless and predictable. They show up before your period and fade once it starts, and you don't need to see anyone just because you feel cold once a month.

A fever, a sore throat, or other signs of infection lasting more than a few days point to a real cold or flu, not PMS. Premenstrual symptoms, physical or emotional, that cost you a week of function every month, or interfere with work, relationships, or sleep, are also worth tracking. Two months of daily notes on when symptoms start and stop make the pattern easy to show a doctor instead of describing it from memory.

Cold-like symptoms before a period haven't been studied much as their own category. Most research groups them under the broader physical symptoms of PMS. What that research does show is how common premenstrual physical symptoms are overall. A systematic review of studies on body composition and PMS cited PMS as affecting an estimated 47.8% of women worldwide, though rates vary widely by country and how symptoms are measured (Current Women's Health Reviews, 2023). A UK workplace survey found over 90% of women reported some premenstrual symptoms, and 40% rated them moderate or severe, with more severe symptoms linked to poorer work outcomes (International Journal of Environmental Research and Public Health, 2021).

On the treatment side, a few small trials have looked at easing PMS's physical symptoms generally, rather than cold sensitivity specifically. Zinc supplementation reduced physical and psychological PMS symptoms, including headaches and muscle pain, in a trial of university students (Biological Trace Element Research, 2023). Regular exercise improved physical symptoms like pain and breast tenderness across a review of 17 studies (Complementary Therapies in Medicine, 2020). None of these trials measured cold sensitivity as its own outcome, so what helps it specifically is still mostly trial and error.

There's no specific treatment for premenstrual chills. Coping ideas can help in the moment, but they aren't the same as treatment. Warmth helps most directly. A blanket, warm socks, or a hot drink raise how you feel faster than waiting it out. Gentle movement, even a slow walk, gets circulation going to cold hands and feet.

If the chills show up alongside irritability or tears, note both. That combination is common in the days before a period, and seeing the two together can make either one feel less random. Niyora is a PMS and PMDD support app. If you want somewhere to put how you're feeling before you react, Niyora's Moon lets you write down what happened, see it from another angle, and calm down before you respond to anyone. The PMS quiz can show you how much these patterns affect your month overall.