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    Menopause transition

    Am I in perimenopause? 8 early signs

    Perimenopause is the transition toward menopause, and it can begin in your early 40s — sometimes late 30s — years before periods stop. It rarely arrives all at once. These are the changes people notice first, and how to track them so a clinician can see the pattern.

    Emmenia editorial3 min readReviewed 22 August 2026

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    The transition rarely announces itself — it shows up in small changes.

    Bleeding that is very heavy, bleeding between periods, or any bleeding after a full year without a period should be checked by a clinician promptly.

    Eight changes that often signal perimenopause

    1. Your cycle length starts to shift

      The most reliable early sign: cycles that get shorter, longer, or simply less predictable than your own normal. A single odd month is common; a persistent change over several cycles is more telling.

    2. Periods change in flow

      Some cycles become lighter, others noticeably heavier. Flooding, clots or periods lasting longer than a week are worth raising with a clinician rather than waiting out.

    3. Hot flushes and night sweats

      Sudden waves of heat, flushing or sweating — often at night — are classic vasomotor symptoms. They can start while you're still having regular periods.

    4. Sleep gets lighter or broken

      Trouble falling asleep, waking at 3am, or unrefreshing sleep — sometimes tied to night sweats, sometimes not.

    5. Mood and irritability shift

      Lower mood, anxiety, or a shorter fuse that doesn't match what's going on around you. Hormonal shifts are a real contributor, and worth taking seriously rather than dismissing.

    6. Brain fog and word-finding pauses

      Trouble concentrating or reaching for a word you know. It's common in the transition and usually eases — but tell your clinician if it's affecting daily life.

    7. Joint aches and body changes

      New joint stiffness, changes in energy, or shifts in weight distribution can accompany the hormonal transition.

    8. Vaginal dryness or bladder changes

      Dryness, discomfort with sex, or needing the bathroom more often. These are common, treatable, and worth mentioning even though they feel private.

    Common questions

    How long does perimenopause last?
    It varies a lot — commonly around four years, but for some it's a few months and for others closer to a decade. Menopause itself is defined as 12 consecutive months with no period.
    Can I still get pregnant in perimenopause?
    Yes. Ovulation becomes irregular but doesn't stop until menopause, so contraception still matters if you don't want to conceive. This tool is not contraception.
    How is perimenopause diagnosed?
    Usually from your age and symptom pattern rather than a single blood test, because hormone levels swing day to day. A clear record of your cycles and symptoms over time helps your clinician far more than a one-off reading.
    Should I see a doctor?
    See a clinician if symptoms disrupt your life, if bleeding is very heavy or between periods, or if periods return after 12 months without one. They can discuss options including HRT/MHT and non-hormonal approaches.

    Keep reading

    Mood & PMDD

    PMDD vs PMS: how to tell the difference

    Flow & bleeding

    Is my period too heavy? When to see a doctor

    Cycle timing

    Why is my period late? 8 common reasons

    All guides

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    This guide is general educational information and does not replace personalised medical advice. Speak to a clinician about severe, worsening or unusual symptoms.