Symptom · Perimenopause
Irregular periods
Shorter cycles, longer cycles, or a month skipped altogether: irregular periods are often the first sign of perimenopause.
Why it happens
As your egg reserve declines, you ovulate less often. In cycles without ovulation, you don’t make progesterone, while oestrogen can swing high. So cycles can shorten to under 21 days, stretch beyond 35, skip a month or two, or get heavier, until periods gradually space out and stop altogether.
What can make it worse
- Stress, which can delay or bring forward ovulation.
- Big changes in weight.
- Poor sleep, which upsets your hormones.
- Very intense exercise.
Right now
- Track your cycles to spot your own patterns.
- Keep period products with you in case it comes early.
- A single unusual cycle is usually nothing to worry about.
Every day
- Log your cycles over several months to see the changes clearly.
- See a doctor if bleeding is unusually heavy or lasts longer than usual.
- Look after your sleep and stress levels: they affect your cycle directly.
Worried about your periods?
A doctor can check whether the changes are down to perimenopause and rule out other causes.
Any bleeding after menopause (12 months without a period) always needs checking by a doctor.
General information only. It doesn’t replace advice from a doctor who knows your history.
Recognise several of these? That’s no coincidence.
Menopause isn’t just hot flushes. Symptoms can start years before your last period and affect your sleep, mood, energy, memory, weight and intimate health.
Tap a symptom to find out more.
Hot flushes
A wave of heat rising from your chest to your face, lasting one to five minutes. When oestrogen dips, your brain’s thermostat becomes oversensitive, so even a tiny change in temperature can set one off.
Sleep problems
Out like a light one night, wide awake at 3am the next. Progesterone used to help you switch off, and there’s less of it now. Add night sweats from shifting oestrogen, and deep sleep is often the first thing to go.
Brain fog
Words on the tip of your tongue, reading the same line twice, losing your thread mid-sentence. Oestrogen helps fuel your brain, so when it swings, your focus does too. And less progesterone means poorer sleep, which makes the fog thicker.
Anxiety
An email, a meeting, running ten minutes late, and suddenly your stress is through the roof. Progesterone has a natural calming effect, and oestrogen helps keep serotonin steady. When both are in flux, everything feels heavier than it used to.
Joint pain
Knees that creak when you stand up, stiff hands first thing in the morning. Oestrogen helps keep inflammation in check, so when levels dip, joints can feel stiff and sore. Lower testosterone also makes it harder to keep the muscle that supports them.
Palpitations
Your heart suddenly races or pounds while you’re doing nothing at all. Shifting oestrogen affects the nerves that control your heart rhythm. Unsettling in the moment, rarely serious, but always worth mentioning to your doctor.
Mood swings
Laughing one minute, in tears the next, or ready to tell everyone where to go. Oestrogen and progesterone are rising and falling faster than before, and both affect the brain chemicals that keep your mood steady.
Weight gain
Your waistline is changing, even though you’re eating exactly the same. Lower oestrogen moves fat storage towards your tummy. And as testosterone gradually declines, you lose some muscle, so your metabolism slows too.
Low libido
Desire takes longer to show up, or sometimes doesn’t show up at all. Testosterone, which fuels desire, gradually declines, and lower oestrogen can make arousal slower and sex less comfortable. It’s common, it’s not ‘all in your head’, and it can be treated.
Vaginal dryness
Dryness, and sometimes a little discomfort day to day. Oestrogen keeps vaginal tissue naturally moist, so lower levels mean less moisture. It’s very common, and still far too rarely talked about.
Night sweats
Waking up soaked in the middle of the night, changing the sheets, then lying awake. It’s a hot flush triggered by shifting oestrogen, just at night. And with less calming progesterone, getting back to sleep is harder.
Painful sex
Discomfort, or real pain, during or after sex. Lower oestrogen makes vaginal tissue thinner and more delicate, so something that never used to hurt suddenly can. You don’t have to put up with it.
Dry skin
Skin that feels tight, marks more easily and has lost some of its bounce. Oestrogen helps your skin make collagen, and you can lose up to 30% of it in the first five years after menopause.
Fatigue
A tiredness that won’t shift, even after a good night’s sleep. Less progesterone means lighter, more broken sleep, and swings in oestrogen bring night sweats and low mood. You feel it from the moment you wake up.
Hair loss
More hair in your brush, a parting that looks wider than before. Oestrogen and progesterone both help keep hair growing. With less of them, androgens (hormones like testosterone) have more effect, and hair grows back finer.