Perimenopause: What’s Actually Happening and What to Expect

Your periods are becoming irregular. Some months they’re lighter than before; other months surprisingly heavy. You’re in your 40s and your cycle — which you could set a clock by for twenty years — has started doing its own thing. Hot flushes at night, mood shifts that feel hormonal, occasional brain fog. Your doctor mentions perimenopause, and you realise you don’t actually know what that means beyond “something before menopause.”

This guide explains exactly what perimenopause is, how it differs from menopause, what to expect from your cycle as you move through it, and how to manage the changes practically — including what the shift means for your menstrual care.

What perimenopause actually is

Perimenopause is the transitional phase leading up to menopause — the time when your ovaries gradually begin producing less estrogen and progesterone, and your cycle starts to change. It typically begins in a woman’s mid-40s, though for some women it starts as early as the late 30s. It ends with menopause, which is officially defined as 12 consecutive months without a period.

The average duration of perimenopause is 4–8 years, though it can be shorter or longer. You don’t suddenly enter perimenopause — it’s a gradual process that unfolds over years, with symptoms and cycle changes becoming progressively more noticeable as estrogen levels fluctuate more erratically.

Perimenopause vs menopause: the key distinction

This distinction confuses many women. Perimenopause is the transition — you’re still having periods, even if they’re irregular, and you’re still potentially fertile (contraception is still necessary). Menopause is the specific point at which you’ve gone 12 consecutive months without a period. Postmenopause is everything after that point.

Many of the symptoms commonly associated with “menopause” — hot flushes, night sweats, mood changes, sleep disruption — actually begin during perimenopause, often years before the last period. Understanding this helps women seek appropriate support earlier, rather than waiting until periods stop entirely.

How perimenopause affects your period

The most direct perimenopausal experience is a change in your menstrual cycle. The specific changes vary enormously from woman to woman, but common patterns include:

• Longer or shorter cycles: Your 28-day rhythm may extend to 35 or 40 days, or shorten to 21 days, or both in alternating months.
• Skipped periods: Months may pass without a period, followed by a return — this is characteristic of perimenopause, not yet menopause.
• Heavier periods: Many women experience their heaviest periods during perimenopause as estrogen fluctuates. If you’re soaking through pads rapidly or experiencing large clots, see your doctor — perimenopause can cause heavy bleeding, but so can fibroids and other conditions that need to be ruled out.
• Lighter periods: Some women experience the opposite — cycles becoming lighter and shorter as ovulation becomes less consistent.
• Mid-cycle spotting: Irregular hormonal surges can cause light spotting between periods. Pantyliners are useful for managing unexpected spotting during this phase.

Other symptoms of perimenopause

Beyond cycle changes, perimenopause can bring a range of symptoms driven by fluctuating and declining estrogen:

Vasomotor symptoms. Hot flushes (sudden waves of heat, often with sweating) and night sweats are among the most characteristic perimenopausal symptoms. They’re caused by the hypothalamus (the brain’s temperature regulator) responding to estrogen fluctuations.

Sleep disruption. Difficulty falling asleep, waking in the night (often connected to night sweats), or poor quality sleep are very common and significantly affect quality of life during perimenopause.

Mood changes. Irritability, anxiety, low mood, and difficulty concentrating are common, particularly during phases of more rapid estrogen decline. Women with a history of PMS or PMDD often find perimenopause intensifies these patterns.

Vaginal dryness. Declining estrogen thins and dries the vaginal walls (vaginal atrophy), causing dryness, discomfort, and sometimes pain during sex. This symptom is very treatable with topical estrogen or lubricants.

Changes in libido. Both decreasing and (for some women) increasing sex drive can occur during perimenopause.

Managing perimenopause: practical guidance

Perimenopause isn’t a condition to treat — it’s a natural transition to manage well. Options include:

Hormone replacement therapy (HRT). The most effective intervention for significant perimenopausal symptoms. HRT replaces declining estrogen (and progesterone if you have a uterus) and can dramatically improve hot flushes, sleep, mood, and vaginal symptoms. HRT is available in Kenya through gynaecologists and some specialist general practitioners. Evidence on its safety has improved significantly in recent years.

Non-hormonal medication. For women who can’t or prefer not to use HRT, certain antidepressants and other medications can reduce hot flushes and mood symptoms. A gynaecologist can advise.

Lifestyle adjustments. Regular exercise (particularly weight-bearing), a diet rich in calcium and vitamin D (to protect bone density), reducing alcohol and caffeine, and stress management all support perimenopausal wellbeing.

Menstrual care adjustments. Unpredictable cycles mean being better prepared rather than less. Keeping a range of pad sizes — including DadaCare Plus pantyliners for spotting and irregular light days — alongside heavier options for unexpectedly heavy periods, means you’re covered across all the variability perimenopause brings.

When to see a doctor

See your doctor if periods become significantly heavier (soaking through protection hourly), if you’re experiencing very frequent periods (less than 21 days apart), or if symptoms are significantly affecting your quality of life. Perimenopause symptoms are manageable — you don’t have to simply endure them. Keep pantyliners on hand for the irregular spotting this phase often brings, and seek support for the symptoms that go beyond your cycle.