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Perimenopause: signs, symptoms and support

Understand the changes that can happen before your periods stop, what to have handy for a GP discussion and where to find more focused guidance.

Explore guides Safety and when to seek care

Explore guides

Understanding perimenopause4 guides
Periods and physical changes3 guides
Sleep, mood and concentration4 guides
Vaginal symptoms and sex2 guides

What is perimenopause?

Perimenopause is the phase when ovarian hormone levels fluctuate before the final period and through the following 12 months. Menopause is the final period itself, confirmed after 12 months without another period when contraception, pregnancy or another cause does not explain the change. Premenopause means the reproductive years before perimenopause.

You do not need to wait until periods stop to ask for help. Symptoms can begin while periods still look fairly regular, and support or treatment can be discussed before menopause is confirmed.

When does it start, and what are the first signs?

Perimenopause commonly starts in the 40s, although it can begin earlier or later. A change in the usual period pattern is often an early sign: cycles may become shorter or longer, bleeding may become lighter or heavier, or some periods may be missed.

Other early changes can include hot flushes, night sweats, broken sleep, anxiety or mood changes, brain fog, vaginal dryness, bladder changes, joint or muscle symptoms and changes in sexual desire. There is no required order and some people have few symptoms. A new symptom in midlife should not automatically be attributed to perimenopause.

If periods become irregular or stop before 45, ask for assessment rather than waiting 12 months. The early menopause and premature ovarian insufficiency guide explains why the assessment and longer-term care may differ.

What is perimenopause, and how do I know it has started?

Perimenopause is the transition leading up to menopause and ending 12 months after the final period. It often starts in the 40s, but timing and symptoms vary. Changing periods are often an early sign, alongside hot flushes, sleep, mood or concentration changes. Age, symptoms and period history usually guide assessment; a GP can help rule out other causes and plan support.

Are there stages, and how long can it last?

The transition is gradual rather than a fixed sequence. Earlier in perimenopause, cycle length may start to vary. Later, longer gaps between periods are more common. These patterns can help a clinician understand where you may be in the transition, but they do not predict an exact final-period date or symptom timeline.

Perimenopause lasts about 4 to 6 years on average and can last from 2 to 10 years. Individual symptoms may come and go, overlap, improve or continue after the final period. The perimenopause symptoms guide helps group changes by their pattern and impact rather than treating a symptom list as a diagnosis.

Find help for your main symptom

Start with the change you most want help with. These guides explain what to notice and what to discuss; you do not need to match a whole symptom list before seeking help.

If several changes overlap, the perimenopause symptoms guide can help you organise what to mention. A symptom can have more than one explanation; the guide is a starting point for a conversation.

Do I need a blood test?

For most people over 45 with a typical pattern, perimenopause is identified from age, symptoms and period history rather than one hormone result. Hormone levels fluctuate, so a single result can be difficult to interpret and is not needed before discussing symptom support.

Testing may be useful when periods change before 45, the pattern is unclear, pregnancy is possible, medicines or contraception affect bleeding, or another cause needs to be checked. Depending on the history, that might include pregnancy testing or tests for thyroid problems, low iron or another condition. Do not stop contraception or prescribed hormones just to arrange a test without advice from the clinician interpreting it. The menopause blood-tests guide explains these limits in more detail.

How does new research fit with my own symptoms?

A Nature Medicine study published in October 2026 reconstructed population patterns from existing laboratory records and found hormonal changes more than a decade before the final period. It does not identify when one person's perimenopause begins or predict their final period. Your own symptoms and period history remain the starting point for assessment.

What can help day to day, and what treatment can I discuss?

Support can combine everyday measures with care for the symptom affecting you most. Regular sleep routines, manageable physical activity and balanced meals can support wellbeing. Light bedding or layers may make episodes of heat easier to cope with. You can ask for help while trying these changes. The Australian Government's home-management guide has practical suggestions.

A treatment conversation can cover psychological support, hormonal and non-hormonal options. The choice depends on the symptom, your health history, medicines and preferences, with benefits, unwanted effects and follow-up considered together. Read the menopause treatment guide to prepare that discussion, or the Australian Government's treatment overview for further background.

For example, use the sleep guide when broken sleep is the main concern, or the vaginal dryness guide when discomfort affects daily life or sex. You can ask for help with one problem without deciding on a treatment beforehand.

Can I still become pregnant?

Ovulation can still occur during perimenopause, even when periods are irregular. Menopausal hormone therapy is not contraception. If pregnancy is possible and not wanted, discuss how long to continue contraception and which option suits your health and preferences rather than relying only on an irregular or absent period.

If a period is late or pregnancy symptoms occur, take a pregnancy test or seek advice. The choosing contraception guide can help prepare the questions to ask.

What about my longer-term health?

The transition is also a useful time to review bone, muscle and heart health alongside ordinary preventive care. Which checks matter depends on your age, history and risks. Tests and scans should match your individual needs.

The bone, muscle and heart health guide explains activity, nutrition, risk assessment and screening. If you are wondering about a scan, start with when a bone-density scan may help. If menopause may be happening before 45, read early menopause and premature ovarian insufficiency because assessment and ongoing care may differ.

Choose one or two questions to take to a review, such as which health checks are due or how to begin strength activity around an existing injury.

How can I prepare for a GP conversation?

Bring a few notes about what has changed and what you want help with. An approximate timeline is useful; you do not need a complete diary before making an appointment.

  • Your main concern: the symptom causing the most disruption, and one or two changes you would like from care — for example, fewer night sweats, more reliable sleep, less anxiety or a plan for heavy bleeding.
  • Periods and bleeding: recent dates if you have them, changes in flow or timing, and anything different from your usual pattern.
  • Symptoms and daily life: when changes began, whether they come and go, your sleep pattern, and the effect on work, relationships or usual activities.
  • Medicines and contraception: names of prescribed medicines, hormones, supplements and your contraceptive method; include what you have already tried and any problems with it.
  • Relevant history and results: personal or family health concerns and previous results or treatment letters, if available.
  • Questions for the plan: “What else could explain this?”, “Would a test change the next step?”, “What can we try first?” and “When should we review it?”

A GP can assess whether the pattern fits perimenopause, consider other causes and discuss practical changes, psychological support, hormonal or non-hormonal treatment where appropriate. The menopause treatment guide can help you compare options around your main concern.

Before you finish, agree on the next step and what changes should prompt an earlier review. You can ask for another review if symptoms change, the first plan does not help or treatment causes problems.

Sources and further reading

Sources supporting this guide. Source organisations have not reviewed or endorsed HerDoc.

Safety and urgent care

Bleeding changes and acute symptoms sometimes need prompt local assessment.

Arrange prompt medical assessment for very heavy or persistent bleeding, bleeding between periods or after sex, or bleeding after 12 months without a natural period. A scheduled withdrawal bleed can be expected with some prescribed hormonal plans; ask what pattern is expected for yours. Seek urgent care for severe or rapidly worsening pelvic or abdominal pain or symptoms that make you acutely unwell. If pregnancy is possible, one-sided pelvic pain, shoulder-tip pain, bleeding, dizziness or fainting needs urgent in-person assessment. Call 000 for collapse, severe bleeding, chest pain, severe breathing difficulty, sudden confusion, facial droop, sudden weakness or speech difficulty.

Symptoms that need urgent care

  • Very heavy or persistent bleeding
  • Bleeding between periods, after sex or after 12 months without a natural period
  • Severe or rapidly worsening pelvic or abdominal pain
  • Possible pregnancy with pain, bleeding, dizziness or fainting

When online care is not suitable

  • Possible ectopic pregnancy
  • Collapse, severe bleeding, chest pain, severe breathing difficulty or stroke signs
  • Symptoms needing urgent examination or treatment

Common questions

How is perimenopause different from menopause?

Perimenopause is the transition that begins before the final period and includes the first year afterwards. Natural menopause is recognised after 12 months without periods when there is no other explanation. Hormonal contraception or treatments and procedures that affect periods can make the timing harder to identify.

Can I seek help if only one symptom bothers me?

Yes. You can focus the conversation on one concern and how it affects your life. You do not need a long symptom list before asking for help.

What should I prepare if I cannot remember when symptoms started?

Have your period pattern, symptom timing, medicines, contraception and relevant personal or family history handy. Previous results and what you have already tried can also help. An approximate timeline is useful: describe what is different now and the concern you most want help with. You do not need a complete diary before the appointment.

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