How do periods change during perimenopause?

Perimenopause is the stage before the menopause milestone when hormonal changes begin. One of the earliest and most noticeable signs is a change in your menstrual cycle.

Periods often become less predictable and many women notice differences in timing, flow and frequency.

How perimenopause affects cycle length

Your menstrual cycle may no longer follow a regular pattern. Some periods may come closer together, while others may be further apart. This change in timing is often one of the first signs of perimenopause.

How perimenopause affects period flow

The amount of bleeding during your period can change. Some months may be lighter than usual, while others may feel heavier. These variations can happen from one cycle to the next.

Skipped periods in perimenopause

It becomes more common to miss periods during perimenopause. You may go several months without a period, then have one again. This pattern can continue for some time before periods stop completely.

How perimenopause affects period duration

Periods may last for fewer days or continue for longer than you are used to. Some women notice spotting at the beginning or end of their period.

When to see a doctor

Even though many changes are normal, a perimenopause consultation can provide clarity if you experience any of the following:

bleeding between periods
bleeding after sex
very heavy or prolonged bleeding
a sudden or unusual change in your cycle

Key points

Periods often become less predictable during perimenopause, typically occurring alongside other physical symptoms and changes.
Cycle length, flow and duration can all change.
Skipped periods become more common over time.
Changes may vary from month to month.
Some symptoms should always be checked by a doctor.

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.

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