The Four Stages of Perimenopause: A Map for the Journey

Something is changing, and nobody warned you.

Maybe it started with sleep. You used to drop off easily, and now you're staring at the ceiling at 4am for no reason you can name. Maybe it's anxiety that arrives out of nowhere, or the moment in a meeting when a word you've used a thousand times simply refuses to come. Maybe your periods have quietly changed rhythm, or your patience has worn so thin you don't recognise yourself in your own reactions.

If any of that sounds familiar, I want to say something before we go any further: you are not imagining it, you are not "just stressed", and you are certainly not alone.

Perimenopause is the transition phase leading up to menopause, when the ovaries gradually produce less oestrogen and hormone levels begin to fluctuate. It usually begins in a woman's forties, lasts around four to eight years, and ends twelve months after your final period, which is the point doctors call menopause. It doesn't happen all at once. It unfolds in stages, and knowing which stage you're in changes how you experience all of it.

The four stages of perimenopause

Clinicians describe the transition in stages based mainly on what your cycle is doing. Here they are in plain language.

Stage 1: Very early perimenopause. Your periods still arrive roughly on schedule, which is exactly why this stage is so confusing. The first changes are usually everything except your cycle: lighter or heavier bleeding, poorer sleep, new anxiety, irritability, breast tenderness, migraines that shift pattern. Many women spend years here without anyone, including their GP, joining the dots.

Stage 2: Early perimenopause. Your cycle length starts to vary noticeably, typically by seven days or more. A 28-day cycle becomes 24, then 33, then 26. Symptoms often step up alongside: hot flushes may appear, sleep gets more fragile, and the emotional weather becomes less predictable.

Stage 3: Late perimenopause. You begin skipping periods altogether, with gaps of sixty days or more. Oestrogen swings are at their widest here, which is why this stage often brings the most intense symptoms: flushes, night sweats, brain fog, mood dips.

Stage 4: Very late perimenopause. Periods become rare as you approach the twelve-month mark that defines menopause. For many women the storms begin to settle here, though symptoms can continue into the years beyond, which is called postmenopause.

Two things to hold onto. First, this is a map, not a timetable: women move through these stages at completely different speeds, and not every symptom visits everyone. Second, the stages are not a downhill slope. Most women I work with say the hardest part was not knowing what was happening. Once you can locate yourself on the map, the fear loses a great deal of its power.

How do I know what stage I'm in?

Start with your cycle, because that's what the stages are built on. Track your periods for a few months, even roughly: dates, flow, and how you slept and felt. A simple notes app is fine. The pattern that emerges will usually tell you whether your cycle is still regular, varying, or beginning to skip.

Here's something many women don't know: if you're over 45, the NICE guidelines that GPs work from say perimenopause should be diagnosed from your symptoms and cycle changes alone. You do not need a blood test. Hormones fluctuate so much during this transition that a single test can easily mislead, which is why the "perimenopause tests" sold online are of limited use. If you're under 45, and especially under 40, do see your GP, because earlier changes deserve proper investigation.

The other journey: the one happening inside you

The four stages above describe what your body is doing. In my therapy room, I watch a second journey unfold alongside it, and this one gets far less attention.

I've spent years walking with people through another of life's great transitions: grief. Readers of this blog will know my 12 Stages of Grief work. That experience has taught me that every major life transition has recognisable inner territory, and that having a map of it changes everything. Perimenopause is no exception. The inner journey I see has four phases of its own:

Recognition. The moment the fog lifts enough to name what's happening. This is where accurate information does its quiet, powerful work, and where so much unnecessary fear falls away.

Understanding. Learning what your hormones are actually doing and why it affects your sleep, your mood, your memory and your body. Understanding doesn't switch off the symptoms, but it dismantles the frightening story we tell ourselves about them.

Rebalancing. The practical work: supporting your sleep, steadying your emotional world, feeding your body well, having informed conversations with your GP, and grieving honestly for what this transition asks you to let go of. Yes, grieving. We'll talk about that properly later in this series, because it's the part almost everyone skips.

Transformation. The part nobody tells you about, because our culture only tells the loss half of the story. On the other side of this transition, many women describe a clarity, confidence and sense of self they had never had before. That is not a consolation prize. For many of the women I work with, it becomes the whole point.

What this series will cover

Over the coming weeks I'll be publishing an article on each stretch of this territory, and I'll link each one here as it goes live so this page can serve as your map:

1. The four stages of perimenopause (this article)
2. **Perimenopause symptoms**: the signs, the age, the timeline, and a checklist
3. **The emotional rollercoaster**: anxiety, mood swings and rage
4. **Perimenopause, sleep and fatigue**: why you're so tired
5. **Brain fog and memory**: you are not losing your mind
6. **The grief of perimenopause**: mourning the woman you were
7. **Food, sugar, weight and hormones**: eating for perimenopause
8. **HRT, your GP and the support in between**
9. **What gets better after menopause**: growth and transformation

A note on where I stand: I'm a psychotherapeutic counsellor, hypnotherapist and naturopath, not a doctor. Nothing in this series is medical advice. If your symptoms are affecting your life, your GP should be part of your support, and one of these articles is devoted entirely to making that conversation easier. What I offer is the other half of the picture: the emotional, psychological and practical territory that a prescription doesn't reach.

Frequently asked questions

How do I know what stage of perimenopause I'm in?

Track your cycle for two to three months. Still regular but with new symptoms suggests very early perimenopause; cycle length varying by seven days or more suggests early perimenopause; gaps of sixty days or more suggest late perimenopause. If you're over 45, your GP can confirm perimenopause from symptoms alone, without a blood test.

What are some signs that perimenopause is ending?

Periods becoming very infrequent, with gaps of several months, is the clearest sign you're in the final stage. Menopause itself is confirmed once you've gone twelve full months without a period. For many women, symptoms such as flushes and mood swings begin to ease as hormone levels settle, though this varies.

At what age does perimenopause typically begin?

Most commonly in the mid-forties, though it can start in the late thirties. In the UK the average age of menopause itself is 51, with perimenopause usually beginning four to eight years before that. Changes before 40 should always be discussed with your GP.

If you're in the thick of this and would like to talk it through with someone who understands life's transitions, I offer a free discovery call. You can book a time that suits you here. And if you'd rather just read on for now, the next article in the series is waiting for you.