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Can you be in perimenopause
with regular periods?
Women can be in perimenopause if they are having regular periods but the menstrual cycle length has changed by seven days or more.
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Perimenopause is the stage when hormonal changes begin as the body moves towards the menopause milestone. These hormonal shifts can start several years before periods become irregular. Because of this, some women experience symptoms even though their monthly cycle still appears normal.
Understanding this can help women recognise early hormonal changes and explore symptoms and care if changes begin to affect wellbeing.
What happens to hormones in perimenopause?
During the early stages of perimenopause the ovaries still release eggs. However, hormone levels begin to fluctuate more than they did previously. Oestrogen and progesterone may rise and fall unpredictably from one cycle to the next.
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These hormonal fluctuations can cause symptoms even before noticeable changes occur in the menstrual cycle.
Why periods stay regular in perimenopause
Menstrual periods are controlled by a complex interaction between the brain, the ovaries and several hormones.
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In early perimenopause the ovaries may still ovulate and, because ovulation continues, the timing of periods may remain fairly predictable.
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At the same time, hormone levels between cycles may fluctuate more than usual. This is why symptoms can appear even when the menstrual cycle is still predictable.
Early perimenopause symptoms before cycle changes
Possible early symptoms of perimenopause can include:
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sleep disturbance
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increased anxiety or mood changes
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fatigue or reduced energy
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headaches
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breast tenderness
These symptoms can appear gradually and may come and go. Not every woman experiences symptoms in the same way.
When do periods change in perimenopause?
As perimenopause progresses, the menstrual cycle often begins to change. Periods may become closer together, further apart, heavier or lighter than usual or unpredictable in timing.
These changes occur because ovulation becomes less consistent as the ovaries gradually slow their hormone production.
Eventually, the menopause milestone occurs when periods stop completely and have not returned for 12 months.
When to see a doctor
If you are in your late 30s or 40s and notice new symptoms that may be related to hormonal change, it can be helpful to arrange a perimenopause consultation.
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This can provide clarity, allow a thorough assessment of your symptoms, consider other possible causes and discuss appropriate perimenopause treatment options.
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Medical advice may be particularly helpful if you experience:
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symptoms affecting sleep, mood or daily life
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very heavy or prolonged bleeding
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bleeding between periods
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symptoms that are difficult to explain
Key points
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It is possible to be in perimenopause with regular periods if the cycle has changed by seven days or more.
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Hormone levels can fluctuate before menstrual cycles begin to change.
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Early symptoms may appear even when the cycle seems normal.
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Menstrual changes often develop gradually as perimenopause progresses.
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Medical advice can help if symptoms become troublesome or unclear.
Medically reviewed by Dr Susana Rodriguez, menopause clinician at ClaraSana Women’s Health, Perth.
Our content is based on up-to-date Australian guidelines & may differ from information on other sites.