Is This Perimenopause? The Symptoms Most Women Don't Expect
Is This Perimenopause? The Symptoms Most Women Don't Expect
She's in her early forties. She's sleeping badly, feeling anxious for no clear reason, gaining weight around her middle despite nothing changing, and her periods have started doing something different. She's been to her GP. Her blood tests came back normal. She's been told don’t worry about testing hormones, just go on a progesterone pill and maybe a gel and see how you go.
I hear this story at least once a week (more if Im being honest).
If you're a woman in your late thirties or forties and something feels off, something you can't quite name, there is a very real chance that perimenopause has already begun. And the reason most women don't recognise it is that it rarely starts with a hot flush.
Unlike the women who came before us, we're no longer in the dark about perimenopause. It's talked about constantly, and that's mostly a good thing. But awareness has a shadow side. I'm seeing more and more women use it as a full stop. Oh well, I'm just in peri. As if the diagnosis is the destination, rather than the beginning of actually understanding what's happening and doing something about it. Yes you might be in peri but doesn’t mean things can’t be better for you.
As a naturopath and nutritionist working with women across Australia, I've spent years helping women understand what's actually happening in their bodies during this transition. This article is going to give you the clearest picture I can of what perimenopause really looks like including the symptoms that get missed, misdiagnosed, and dismissed.
Quick answer: What are the early signs of perimenopause? The earliest signs of perimenopause are often anxiety, sleep disruption, heavier periods, premenstrual mood changes, and weight gain around the abdomen not hot flushes. These symptoms are driven primarily by a drop in progesterone, which can begin in the late thirties, while oestrogen is often still high or even rising. If you're in your forties and something feels different, perimenopause is a reasonable place to look.
What Perimenopause Actually Is (And When It Starts)
Perimenopause is the transition period leading up to your final period, the years when your ovarian function is gradually changing, your hormones are fluctuating, and your body is moving toward menopause. It typically begins in the early to mid forties, but for some women it starts in the late thirties.
Here's what most women aren't told: perimenopause can last anywhere from two to twelve years. And you can still have regular periods throughout much of it.
The other thing that surprises most of my clients is this: perimenopause doesn't begin with oestrogen dropping. It begins with progesterone dropping. In fact, in the early phase of perimenopause, oestrogen often rises, sometimes to significantly higher levels than at any other point in your adult life. This matters enormously for understanding your symptoms, because many of the most common and distressing experiences of early perimenopause are driven not by low oestrogen but by low progesterone relative to high, fluctuating oestrogen.
Think of it like a see-saw that's lost its balance. Progesterone is the calming, stabilising hormone. When it starts to decline, even while oestrogen is still high, the whole system becomes less predictable. Moods swing. Sleep deteriorates. Periods change. The nervous system loses its buffer.
This is perimenopause. It is not, as women are so often told, just stress. Although stress is very much part of the picture and rarely gets the airtime it deserves in this conversation. Cortisol and progesterone are made from the same building blocks. When your nervous system is chronically overloaded, your body prioritises cortisol production, and progesterone pays the price. So the hormonal shifts of perimenopause and the relentless pace of most women's lives in their forties aren't two separate problems. They are compounding each other, quietly, every day."
Why Your Blood Tests Might Say "Normal" When You're Not
One of the most frustrating experiences I hear about regularly is this: a woman knows something has shifted. She's struggling in real and significant ways. She goes to her GP. Her bloods come back normal. She's sent home without answers and told there's no point testing her hormones. Maybe she's offered an antidepressant or the pill. Maybe she's told it's just stress, or just aging, or just part of being a woman in her forties. She leaves the appointment feeling dismissed, confused, and frankly a little gaslit. Because she knows her body. She knows something has changed. And she's right.
And yet, here's the other side of that conversation. Not every symptom is perimenopause. Some women are burnt out, depleted, running on empty, and the hormonal picture is absolutely real but it isn't the whole story. Perimenopause can be a genuine explanation and a convenient scapegoat at the same time.
The anxiety, the exhaustion, the weight gain, these are real. But sometimes they aren't purely hormonal. Sometimes they are symptoms that have been knocking quietly for years, a decade even, that are only now impossible to ignore. The hormonal shifts of perimenopause don't create the problem from scratch. They amplify what was already there. A nervous system already running on empty. A body already nutritionally depleted. A stress response that has been in overdrive for so long it has become the baseline.
This is why in my practice the answer is almost always both. The hormones matter. And so does everything underneath them. Which is why I never just treat the hormones. I look at what's been driving the whole picture, often for far longer than perimenopause has been on the radar.
So what's the answer? Better testing, better interpretation, and a practitioner who is actually looking at the whole picture; your history, your cycle, your stress load, your nutritional status, and yes, your numbers. Not just one of those things in isolation.
We need to test. Knowing your numbers, your thyroid, your cortisol, your iron, is genuinely useful data and I encourage women to seek it out. The issue is that a single blood test on a single day rarely tells the whole story during perimenopause. Progesterone in particular is notoriously tricky to capture. It fluctuates so dramatically across the cycle that one snapshot can be wildly misleading. Testing at multiple points throughout the cycle, rather than once, gives us a far more accurate picture of what your hormones are actually doing. A result that looks normal on day 21 can look completely different on day 7. This is why I look at testing alongside cycle charting, symptom patterns, and timing, because the pattern across the whole cycle is where the real information lives, not in a single number taken on a single day.
As a naturopath, I don't rely on a single test result to tell the whole story. I look at the pattern of symptoms, their timing in the cycle, how they've changed over time, and what functional testing can add to that picture. That approach gives us something a standard blood panel can't: the actual story of what your body is doing.
This is also why a personalised approach matters so much. Family history, lifestyle, metabolic health, how much stress your nervous system is carrying, these all influence how your hormones behave and how your symptoms present. Two women the same age with the same blood results can feel completely different. The story is always individual
The Perimenopause Symptoms Women Actually Come to Me With
The women who book consultations with me almost always come in thinking they're in perimenopause. And they might be right. But sometimes they're not, or they're only partly there, or something else entirely is driving the picture. What they share in common is this: they feel terrible and they want to understand why. A label is a starting point. It is not an answer. I hear a lot of this:
"I can't sleep and I don't know why."
"I've been so anxious lately and it came out of nowhere."
"I'm putting on weight around my middle even though nothing has changed."
"My periods have gone strange."
"I feel like I've lost myself somewhere."
These are perimenopause symptoms. But it doesn’t mean thats the end of the conversation.
The Symptoms Worth Taking Seriously
Is anxiety a sign of perimenopause?
Yes it is and it's one of the most commonly missed ones. Progesterone converts in the brain to a neurosteroid called allopregnanolone, which acts on the same receptors as anti-anxiety medication, the GABA receptors. When progesterone begins to drop, so does this natural calming effect. The result is anxiety that can feel completely out of character: waking at 3am with a racing mind, feeling edgy and overwhelmed in situations that never bothered you before, or a low-level sense of dread with no obvious cause.
This is not a personality change. This is chemistry.
Why can't I sleep during perimenopause?
Sleep disruption is one of the earliest and most reliable signs that perimenopause has begun. Progesterone is naturally calming and sleep-supporting. As it declines, the quality of sleep often changes first you might fall asleep fine but wake between 2 and 4am and struggle to get back to sleep. Or you might feel exhausted but wired, which is a classic sign of a nervous system that's lost its hormonal buffer.
What causes perimenopause weight gain?
In early perimenopause, rising oestrogen combined with declining progesterone increases insulin resistance, meaning your body becomes less efficient at managing blood sugar, more likely to store fat, and more prone to cravings. This is compounded by a rise in androgens (male hormones) that further drives insulin resistance and can increase appetite. The result is weight gain, particularly around the abdomen, that doesn't respond to the things that used to work.
This is not a willpower issue. It's a metabolic shift driven by hormonal change and it needs a metabolic response, not a calorie-restricted diet.
Can perimenopause cause heavy periods?
Yes, and this surprises a lot of women. Because oestrogen rises in early perimenopause while progesterone falls, the uterine lining can become thicker than usual, leading to heavier and sometimes more painful periods. Cycles may also become shorter initially before eventually becoming irregular. If your periods have suddenly become heavier in your forties, perimenopause is worth exploring as a contributing factor.
What are the neurological symptoms of perimenopause?
Brain fog, difficulty concentrating, losing words mid-sentence, and memory lapses are all reported frequently by perimenopausal women and frequently dismissed. Oestrogen is deeply involved in brain function, and as levels fluctuate, so does cognitive clarity. Migraines can also worsen or appear for the first time, particularly around the cycle, as oestrogen swings trigger vascular changes in the brain.
Can perimenopause cause joint pain?
Oestrogen has a significant anti-inflammatory role in the body. As it fluctuates and eventually declines, some women notice joint stiffness, achiness, or old injuries flaring in ways that feel new. This is frequently attributed to "getting older" but if it's appearing in your early to mid forties, your hormones are a very reasonable place to look.
Other symptoms that often get missed:
Increased sensitivity to histamine, alcohol intolerance, new food reactions, worsening allergies
Heart palpitations, particularly at night or around the cycle
Changes in libido, driven by declining oestrogen, testosterone, and the simple exhaustion of being hormonally dysregulated
Mood changes that feel disproportionate, think irritability, low mood, emotional sensitivity
Changes to skin, hair, and body temperature regulation
The Four Phases: Because Perimenopause Is Not One Thing
One of the most useful frameworks I work with in clinical practice is understanding that perimenopause moves through distinct phases, each with its own hormonal signature and its own set of symptoms.
Phase one is when periods are still regular but symptoms are beginning. This is typically a time of high oestrogen and dropping progesterone. Anxiety, sleep changes, heavier periods, and premenstrual mood shifts are the hallmarks.
Phase two begins when cycle length starts varying by more than seven days. Oestrogen is now fluctuating more widely leading to both high-oestrogen symptoms like breast tenderness and irritability, and oestrogen-withdrawal symptoms like migraines and night sweats. This combination can be bewildering because the symptoms seem contradictory.
Phase three is marked by longer gaps between periods up to 60 days. Oestrogen is getting lower overall, though it still spikes unpredictably.
Phase four is the final stretch before menopause itself defined as twelve consecutive months without a period.
Understanding which phase you're in changes what kind of support makes sense. This is one of the reasons I spend significant time in consultations mapping the pattern of a woman's symptoms across her cycle and over time, rather than treating a single blood result.
What Actually Helps And Where I Come In
The most important thing you can do is stop dismissing what you're feeling and start treating it as useful information.
From a naturopathic and nutritional medicine perspective, perimenopause is not a problem to be masked. It's a transition that the body needs support to move through well. What that looks like will be different for every woman, but there are some evidence-based foundations that I use consistently in my practice:
Magnesium is the single most important nutrient for perimenopausal women in my clinical experience. It supports GABA activity in the brain (the same calming pathway that progesterone supports), improves sleep quality, reduces anxiety, and helps with insulin sensitivity. Most women are deficient.
Nutritional support for progesterone production including adequate zinc, vitamin B6, and blood sugar regulation can make a big difference in early perimenopause when the body still has the capacity to produce progesterone but needs the right conditions to do so.
Liver and gut support matters more than most women realise. The liver is responsible for metabolising and clearing excess oestrogen. When it's overburdened by alcohol, processed foods, synthetic chemicals, or chronic stress, oestrogen can recirculate rather than clear, driving the oestrogen-dominance picture that makes early perimenopausal symptoms worse.
Blood sugar regulation is foundational. The insulin resistance that develops in perimenopause makes everything else harder, weight management, mood, sleep, inflammation. A program like Metabolic Balance, or a personalised protocol I use with clients, is built around each woman's individual blood values, which means we're addressing this at a precision level rather than guessing.
Herbal medicine has a long history of evidence in supporting hormonal transitions. There are specific herbs I use regularly in practice for sleep, anxiety, oestrogen metabolism, adrenal support, and cycle regulation chosen individually based on the whole clinical picture, not a one-size supplement.
Nervous system support is not optional. The stress response and the hormonal system are in constant conversation. When cortisol is chronically elevated which it is for most women in their forties, who are typically also navigating peak career demands, aging parents, and complex family dynamics it directly suppresses progesterone production and worsens insulin resistance. This is where yoga therapy, breathwork, and EFT tapping, which I integrate into my practice as a yoga therapist, become genuinely clinical tools rather than nice extras.
Frequently Asked Questions About Perimenopause
How do I know if I'm in perimenopause? The most reliable indicators are symptom-based rather than test-based. If you're in your late thirties or forties and experiencing changes to your sleep, mood, cycle, or weight, particularly in combination, perimenopause is worth exploring. A single blood test is not reliable for diagnosis because hormone levels fluctuate too much during this transition.
What age does perimenopause start in Australia? Perimenopause most commonly begins in the early to mid forties, though it can start in the late thirties. The average age of menopause in Australia is around 51-52, which means the perimenopausal transition can span a decade or more before that.
Can you be in perimenopause with regular periods? Yes. Regular periods are common in early perimenopause. The hormonal changes that drive symptoms can be well underway while your cycle still appears normal. Cycle changes, heavier flow, shorter cycles, shifting PMS are often more revealing than whether a period arrives on time.
Is perimenopause the same as menopause? No. Perimenopause is the transition period leading up to menopause. Menopause is defined as twelve consecutive months without a period. Most symptoms actually occur during perimenopause, not menopause itself.
Can a naturopath help with perimenopause? Yes. Naturopathic and nutritional medicine offers evidence-based support for perimenopausal symptoms including sleep disruption, anxiety, weight changes, heavy periods, and mood shifts. As a naturopath and nutritionist working specifically with women in this life stage, I use functional testing, personalised nutrition, herbal medicine, and nervous system support to address the underlying hormonal drivers rather than managing symptoms in isolation.
Do I need HRT for perimenopause? This is a conversation worth having with your GP or specialist, and if you do go down that path, the type of hormones matters. There is a significant difference between synthetic progestins and body-identical progesterone, which is molecularly identical to what your ovaries produce. For many women, particularly in early perimenopause where progesterone is dropping but oestrogen is often still high, body-identical progesterone can be genuinely transformative for sleep, anxiety, and mood. It is also not the only option. Naturopathic approaches can be highly effective, particularly in the earlier phases, and I work collaboratively with GPs and specialists when HRT is part of a client's picture. The key is that whatever path you take, it should be tailored to where you actually are in the transition, not a one-size prescription.
What's the difference between perimenopause anxiety and regular anxiety? Perimenopausal anxiety tends to appear or worsen specifically in relation to the menstrual cycle often in the week before a period, or in the middle of the night. It can feel physical as well as psychological, with a racing heart or sense of dread. If anxiety is new or has changed significantly in your forties, hormonal changes are worth investigating as a driver.
When to Seek Support
If you're in your late thirties or forties and recognising yourself in this article, let's talk. You can book a free discovery call to find out how I work and whether we're a good fit, or if you're ready to get started, check out my Very Peri Protocol, designed specifically for women navigating this transition and wanting a clear, personalised path forward
I work with women across Australia via online consultation, which means wherever you are, we can have this conversation. You can book at HERE
Carolyn Allen is a naturopath, nutritionist, and yoga therapist based in Maleny, Queensland, offering online consultations across Australia. She works with women of all ages navigating hormonal transitions, with a focus on perimenopause, metabolic health, and whole-body wellbeing.