What is the difference between perimenopause and menopause?

Perimenopause is the transition phase before menopause, when hormones fluctuate and periods become irregular. Menopause is the point confirmed after 12 months with no period — average age 49 in Singapore.

Can I still get pregnant during perimenopause?

Yes. Ovulation still happens on and off, so use contraception until menopause is confirmed. As a guide, it can usually stop after 1 year with no periods if you are 50 or over, or 2 years if under 50.

How long does perimenopause last?

It varies — often a few years, and in Singapore it can begin in the early 40s and last up to about a decade.

For most symptomatic women under 60 or within 10 years of menopause who can safely take it, MHT/HRT’s benefits outweigh the risks and it also protects bone. It is not suitable for everyone, so discuss your personal risks with a doctor.

Perimenopause: The Menopause Transition (Singapore)

Q: When should I see a doctor during the menopause transition?

If symptoms affect your daily life, if periods change dramatically or become very heavy, and promptly for any bleeding after menopause — any bleeding 12 or more months after your last period always needs evaluation.

Written & reviewed by the BestDoctors.sg editorial team · Last updated 22 Aug 2026 · General information, not medical advice

Quick answer. Perimenopause is the transition phase before menopause, when ovarian hormones fluctuate and periods become irregular. In Singapore it can begin as early as the early 40s and may last several years. Menopause itself is diagnosed only after 12 consecutive months with no period – in Singapore the average age is 49. Common symptoms include irregular periods, hot flushes, night sweats, poor sleep, mood changes, brain fog, vaginal dryness, lower libido and joint aches. Importantly, you can still get pregnant during perimenopause, so contraception is still needed – and it’s worth seeing a doctor to manage symptoms and protect long-term bone and heart health.

Perimenopause is the lead-in to menopause, not menopause itself – a transition that can span years and bring symptoms well before periods stop. Recognising it helps you manage symptoms and make informed choices.

What perimenopause is

It’s the natural lead-in to menopause, when ovarian oestrogen and progesterone swing and gradually decline. The usual first sign is a change in your menstrual cycle – periods becoming irregular in length, frequency or flow. In Singapore perimenopause can start as early as the early 40s and last up to about a decade.

How menopause is defined

Menopause is confirmed looking back: 12 consecutive months with no period, with no other cause. The average age of natural menopause is 49 in Singapore (around 51 internationally), and it usually happens between 45 and 55. In women over 45 with typical symptoms, blood tests are generally not needed to diagnose it.

Symptoms

Irregular periods; hot flushes and night sweats; sleep problems; mood changes; brain fog; vaginal dryness; reduced libido; and joint and muscle aches. Singapore’s menopause guidelines note that the local symptom profile leans toward new joint and muscle pain, poor sleep, sexual and urinary health issues, tiredness, and hot flushes.

You can still get pregnant

Ovulation still happens intermittently during perimenopause, so pregnancy remains possible – and contraception is advised until menopause is confirmed. As a general guide, contraception can usually stop when you are under 50 and have had no periods for 2 years, or 50 or over and no periods for 1 year, and is generally not needed after 55 – but confirm your timing with a doctor (see contraception).

Managing symptoms

A healthy lifestyle is the foundation of care: balanced diet, regular exercise, weight management, not smoking, limiting alcohol, stress management and good sleep – these ease symptoms and reduce long-term risk. For those suitable, menopausal hormone therapy (MHT/HRT) effectively treats hot flushes and night sweats and helps prevent osteoporosis; for most symptomatic women under 60 or within 10 years of menopause who can safely use it, benefits outweigh risks. It isn’t for everyone, so discuss your personal risks with a doctor (see menopause and HRT). Non-hormonal options exist too, including certain prescription medicines and vaginal moisturisers for dryness.

Bone and heart health – and when to see a doctor

As oestrogen falls after menopause, bone loss (osteoporosis) and cardiovascular risk rise. Weight-bearing exercise, adequate calcium and vitamin D, not smoking, and managing blood pressure, cholesterol and weight all help protect bones and the heart. See a doctor if symptoms affect your daily life, if periods change dramatically or become very heavy, and promptly for any bleeding after menopause (any bleeding 12 or more months after your last period), which always needs evaluation.

Related sexual & reproductive health guides

Related condition guides

Sources

KK Women’s and Children’s Hospital (KKH), Singapore — Guidelines on Management of the Menopause Transition (Singapore average menopause age 49; 12-month definition; local top symptoms; MHT benefit window under 60 / within 10 years; bone and cardiovascular assessment).
NHS — menopause and perimenopause (definitions; usual age 45–55; symptoms; HRT and non-hormonal options; when to seek help).
FSRH / NHS — contraception in perimenopause (pregnancy still possible; when contraception can stop).
SingHealth (HealthXchange) — perimenopause: when it starts and how to manage.

General information only. This guide is general sexual and reproductive health information for Singapore, not personalised medical advice or a diagnosis. Sexual health concerns are common and treatable, and a doctor’s consultation is confidential — see a GP, an O&G specialist, or a sexual health clinic such as the DSC Clinic, and anonymous HIV testing is available. In a medical emergency, call 995.