What nobody tells you about perimenopause: the symptoms that blindsided me
23 Jul 2026
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I was 39 the first time I noticed something was different.
Not dramatically different.
Not in a way I could have pointed to and named.
Just a quiet accumulation of things that didn't quite add up: a sharpness in my mood that felt foreign, anxiety without a reason, sleep breaking in the night for no obvious cause, and a flatness on certain days I couldn’t explain away with tiredness or stress.
A sharpness in my mood that felt foreign.
Anxiety that arrived without a reason.
Sleep started breaking in the middle of the night for no obvious cause.
A flatness that settled in on certain days that I couldn't explain away with tiredness or stress.
I didn't think of perimenopause.
At 39, I thought I was too young.
Perimenopause was something that happened to women in their 50s, women who looked like my mother, not me. I was too young.
I told myself I was just overwhelmed and needed to manage stress better, sleep more, and drink less coffee.
I needed to manage my stress better, sleep more, and drink less coffee.
So I explained it away. One thing at a time. For years.
It wasn't until I was on a WhatsApp video call with my mum and sister in Italy, describing a cluster of symptoms including bloating that had become relentless, that my mum's face changed on the screen.
She looked at my sister and then back at me and said, almost matter-of-factly: " That's perimenopause.
I was 41.
I had probably been in perimenopause for two years already without knowing it.
This post is for every woman who is doing what I did.
Explaining things away, one by one.
Telling herself she’s too young, too stressed, too much of something else.
Missing the pattern because nobody gave her the full picture.
This is the full picture you need to see.
Or at least, the parts nobody tells you.
Perimenopause Starts Earlier Than Most Women Think
Start here, because knowing your age matters most to recognising perimenopause early.
Most women have a picture of menopause that looks like their mother or grandmother.
A woman in her mid to late 50s, with hot flushes and the end of periods.
That picture isn't exactly wrong, but it's incomplete: it overlooks factors that delay women's progress for years.
Perimenopause, the transitional phase before menopause, can begin anywhere from eight to ten years before your final period.
For some women, that means their late 30s.
For many, it means their early to mid-40s.
The average age of menopause in Australia is 51, which means the average woman begins perimenopause in her early to mid-40s at the latest, and often earlier.
I started having symptoms at 39.
I am 44 now.
I have been navigating this transition for five years, most of which I spent not knowing that's what it was.
If you are in your late 30s or early 40s and something feels different, do not ignore it just because of your age.
Recognise the importance of symptoms over age.
As a first step, start by keeping a simple symptom journal for a few weeks.
Write down anything unusual you notice, even if it seems small or disconnected.
Bringing this record to a trusted healthcare provider can help you have a more informed conversation.
Taking this action can be the beginning of finding real answers.
Age is one of the least reliable indicators of whether perimenopause has begun.
Symptoms, not age, are your most reliable guide to perimenopause.
Perimenopause Symptoms Nobody Warns You About
Hot flushes and irregular periods are the symptoms everyone associates with perimenopause.
They are real and common.
But these are often not the first or most disruptive symptoms for many women.
Here are the ones that blindsided me, and the ones I hear about most often from women who had no idea perimenopause was the explanation.
The first symptom I want to highlight is anxiety that comes from nowhere.
Not situational anxiety, not worry about something specific, but a free-floating unease that arrives without a trigger and sits in your chest without explanation.
For me, it showed up in my early 40s and felt completely disconnected from my life.
I thought something was wrong with my mind. It was my hormones.
Estrogen has a significant effect on the brain's stress response and mood regulation.
As it fluctuates in perimenopause, anxiety can spike in ways that feel entirely psychological but are rooted in biology.
This is one of the most commonly missed symptoms because it looks like a mental health issue rather than a hormonal one.
Many women are prescribed antidepressants or anti-anxiety medication before anyone asks whether their hormones might be involved.
I almost was.
Another particularly challenging symptom: rage.
Not irritability. Rage.
The disproportionate, frightening kind that arrives over something small and leaves you wondering who you just were.
A level of anger at minor inconveniences that feels out of character.
Not a personality change, a hormonal one.
Progesterone, which has a naturally calming effect, becomes unpredictable in perimenopause.
When it drops, the buffer between you and your own reactions gets thinner.
Women describe this as one of the most distressing symptoms because it affects their relationships and their sense of self.
You are not becoming a different person.
Your progesterone is fluctuating.
Next comes brain fog.
The inability to find words mid-sentence.
Walking into a room and having no idea why.
Reading the same paragraph three times.
A quality of mental slowness or fuzziness that is alarming when you are used to being sharp.
Estrogen supports cognitive function, memory, and processing speed.
As it fluctuates, so does the clarity of your thinking.
This symptom is particularly confronting for women in demanding careers who have always relied on their mental agility.
It is not early dementia. It is perimenopause.
Sleep disruption is another key change many notice.
Waking at the same time every night, often between 2 am and 4 am, completely alert and unable to get back to sleep.
I wrote about this in detail in another post because it was one of my most significant symptoms.
For years, I thought I had insomnia.
I had hormonal disruption affecting my cortisol rhythm and my sleep architecture.
The distinction matters because the solutions are different.
Joint pain is another frequently missed symptom.
Estrogen has anti-inflammatory properties, and as it declines, joints that were never a problem can start to ache.
Knees, hips, fingers, wrists.
Women describe it as feeling suddenly older than they are.
It is often dismissed as the natural result of ageing rather than recognised as a hormonal symptom with a hormonal solution.
Bloating and digestive changes also surprised me.
This was the symptom that started my own conversation with my mum.
Estrogen affects gut motility and the gut microbiome.
As it shifts, digestive symptoms that never bothered you before can become persistent and confusing.
Bloating, changes in bowel habits, and food sensitivities that seem to appear out of nowhere.
Another unsettling symptom: heart palpitations.
A racing or fluttering heart that arrives without exertion or obvious cause.
Frightening enough that many women end up in emergency departments having cardiac investigations that come back clear.
Estrogen affects the cardiovascular system, and fluctuations can cause benign but alarming palpitations.
If you have had your heart checked and been told everything is fine, perimenopause is worth considering.
Hay fever and histamine intolerance caught me off guard as well.
Suddenly sneezing through spring when you never had allergies before.
Reacting to wine, aged cheese, or fermented foods in ways you never used to.
Waking up congested for no reason.
These are not random new allergies.
There's an emerging understanding that estrogen regulates histamine receptors, and histamine in turn stimulates estrogen production.
When estrogen fluctuates in perimenopause, histamine levels can spike unpredictably.
The result is an immune system that starts behaving as if everyday substances are threats.
Wine intolerance is one of the most commonly reported and least explained symptoms I hear from women in this community.
One glass that used to be fine now brings flushing, headaches, or a racing heart.
It is not that your relationship with wine has changed.
It is that your histamine threshold has.
The Perimenopause Symptom Nobody Talks About Honestly
I want to include this one separately because it is almost never mentioned, and because understanding it changed how I thought about my own experience of pleasure.
As estrogen declines, the tissue of the vulva, the clitoris, and the vaginal walls begins to change.
It becomes thinner, less elastic, and less responsive.
The clitoris, which is far larger internally than most of us were ever taught, depends on estrogen for blood flow and tissue health.
As estrogen drops, sensation in this area can diminish.
The touch that used to register clearly can start to feel muted.
The pathway between stimulation and pleasure can become less reliable.
This is not permanent or irreversible.
With the right hormonal support, either systemic HRT or localised oestrogen applied topically, much of this tissue health can be restored or maintained.
If you are experiencing these symptoms, bring them up with your doctor and ask specifically about hormonal options.
Describe the changes you have noticed in detail, and if possible, keep notes beforehand so you can show patterns over time.
You might say, "I've noticed persistent changes in how things feel, especially in regard to sensitivity and tissue comfort. Could these be related to low estrogen, and can we discuss options like local or systemic HRT?"
If your doctor is not familiar with these treatments, ask to be referred to a menopause or women's health specialist.
You have the right to ask for the support and answers you need.
But it requires knowing it's happening, which means someone has to tell you.
Nobody told me.
I figured it out through research, through going deeper than the standard information, through the kind of obsessive reading that I've come to think of as a necessary tax on being a woman navigating this system.
I'm telling you now so you don't have to find it the same way.
The Emotional Symptoms of Perimenopause Nobody Validates
Beyond the physical, perimenopause carries an emotional weight that is rarely acknowledged in clinical settings.
A grief that doesn't have a name.
A sense of identity shifting underneath you without your permission.
A feeling of loss for a version of yourself that felt easier and more familiar.
A disconnection from your own desire, your own body, your own sense of aliveness, that is deeply disorienting when you don't understand what’s happening.
These are not signs of depression, though they can tip into depression if left unsupported.
They are signs of a significant hormonal shift that affects brain chemistry and mood regulation, among many other things.
They deserve to be taken and analysed for what they are.
They deserve more than "It's just your hormones," dismissed by many healthcare practitioners who don’t have the knowledge or sometimes the willingness to help.
They deserve understanding, not distance.
Why Perimenopause Goes Undiagnosed for So Long
There are a few reasons women spend years not knowing perimenopause is what they're experiencing.
The first is the age assumption.
Both women and their doctors underestimate how early it can begin.
If you are under 45 and you go to your GP with anxiety, sleep disruption, mood changes, and low desire, perimenopause may not be the first thing on the differential list.
It should be.
The second is that the symptoms are so varied and so seemingly unrelated that they don't obviously cluster together.
Anxiety, joint pain, brain fog, and bloating don't look like the same condition from the outside.
They do from the inside, once you know what connects them.
The third is that standard blood tests are unreliable for diagnosing perimenopause.
Hormone levels fluctuate so significantly during this transition that a single FSH or estrogen test can come back normal even when perimenopause is well underway.
A normal blood test is not a reason to dismiss your symptoms.
Your symptoms are the diagnosis.
What I want you to do with this
If you have been reading this post and recognising yourself in it, here are some simple, practical steps you can take next:
- Start tracking your symptoms. Write down what you notice each day, even small changes—mood, sleep, energy, physical sensations. Over a few weeks, patterns will start to show.
- Share your experiences with a trusted person, whether that's a friend, a family member, or someone in an online community. You're not alone in this.
- Prepare some notes or questions before your next doctor's appointment. Bring your symptom journal and ask directly whether perimenopause could be the explanation.
- If you feel dismissed or your symptoms aren't taken seriously, ask to see a specialist in women's health or menopause.
Taking any of these steps can help you move from confusion to clarity.
Stop explaining your symptoms away one at a time and start looking at the pattern.
The anxiety, the sleep disruption, the rage, the brain fog and the low desire are not five separate, unrelated problems.
There may be a single transition that appears in five different ways.
You deserve a doctor who knows this.
You deserve a conversation that takes your symptoms seriously as a cluster rather than addressing each one in isolation.
You deserve to know what is happening in your body before it has been going on for 5 years.
I spent five years not knowing.
I don't want that for you.
The information exists.
The support exists.
The conversation is worth having now, not when things get worse, not when you finally feel bad enough to justify asking for help.
You already justify it.
You always did.
Common questions about perimenopause symptoms
What are the first signs of perimenopause?
For many women, the first signs are not about periods. They are more subtle, like sleep that starts breaking for no clear reason, anxiety that appears without warning, a mood that feels unfamiliar, or brain fog that is new. Hot flushes and irregular periods usually show up later. If you are in your late 30s or early 40s and something feels quietly off, that can be perimenopause starting, even if your cycle still looks normal.
What age does perimenopause start in Australia?
It starts earlier than most women expect. The average age of menopause in Australia is 51, which means perimenopause, the transition before menopause, often begins in the early to mid-40s, and for some women in their late 30s. I started having symptoms at 39 and did not know what they were for two years. Age is not a reliable indicator. Symptoms are a much better guide.
How do I know if I'm in perimenopause?
There is no single test that confirms it. Hormone blood tests can look normal even when perimenopause is happening, because levels change so much during this time. The most reliable sign is a group of symptoms that do not have another clear cause: sleep problems, mood changes, anxiety, brain fog, changes in your cycle, low desire, joint pain, or digestive changes. If several of these show up together, it is worth considering perimenopause and talking to a doctor who understands it.
How long does perimenopause last?
It can last from a few years to more than ten. The average is about 4 to 8 years, but it varies for every woman. It is hard to track because it does not move in a straight line. Some months feel steady, while others feel like you are going backwards. These ups and downs are normal and do not mean something is wrong.
Can perimenopause cause anxiety and depression?
Yes, and it is one of the most often missed connections. Estrogen affects how the brain handles stress and mood. When it changes, anxiety can increase in ways that seem only psychological but are actually caused by biology. Many women are given antidepressants or anti-anxiety medicine before anyone checks if hormones are involved. I almost was. If your anxiety or low mood started in your late 30s or 40s without a clear reason, perimenopause should be considered.
Does perimenopause affect sex drive?
Yes, and for most women, it changes a lot. As estrogen and testosterone shift, desire often becomes less spontaneous, sensation can change, and vaginal dryness can make intimacy uncomfortable. These are not signs that something is permanently wrong. They show that your body's needs have changed. Realising this is usually the first step to finding pleasure again, even if it feels different from before.
Martina Baroncelli
Founder of Arousi, writing from her own experience of perimenopause.