Can you see a doctor about perimenopause before a blood test?

The night sweats started months ago. Your periods are still coming, just not when they used to, and you've been telling yourself you'll see someone once there's a blood test to prove it, or once they finally stop.

You don't need to wait for either. Perimenopause is the stretch before menopause, when hormones are already changing and symptoms can already be getting in the way of work, sleep and ordinary days. NHS.uk says you can contact a GP if you think you have symptoms of menopause or perimenopause and want to know what your options are. That conversation can happen before your last period and before any follicle-stimulating hormone (FSH) result.

If you'd rather skip the reading, Dr Penny Sheehan (GMC 6056535) sees women at our Harley Street menopause clinic on Mondays and Wednesdays, and you can book directly without a GP referral. A 30-minute consultation is £150.

Do you have to wait for your periods to stop?

No, and waiting is usually the harder option. NHS.uk describes menopause as a natural change that usually affects women between 45 and 55, though it can happen earlier. Menopause itself is reached when you haven't had a period for 12 months, and after that it's called postmenopause.

Perimenopause is the time leading up to it. Periods may come more or less often and get heavier or lighter before they stop, and that's often when broken sleep, mood changes, hot flushes and night sweats are at their most disruptive. NHS.uk notes that symptoms usually last 7 to 9 years, sometimes longer, and can change over that time. It also says early advice can help reduce the effects on your health, relationships and work.

Hormonal contraception can blur the picture, because some methods make periods irregular or stop them altogether. It's also still possible to get pregnant during perimenopause. Bring that history with you rather than waiting for your cycle to look tidy.

Two kinds of bleeding are worth a GP visit in their own right, according to NHS.uk: periods that are getting heavier rather than lighter, and any vaginal bleeding once you've gone 12 months or more without a period.

Do you need a blood test first?

Usually not. The test most people wait for is FSH, or a private hormone panel ordered in the hope that a number will settle things. NICE menopause guidance says that in otherwise healthy women over 45 with typical symptoms, FSH isn't required to diagnose menopause.

Instead, NICE identifies perimenopause without laboratory tests in otherwise healthy women aged 45 or over who have recently started vasomotor symptoms (hot flushes and night sweats) and have any change in their menstrual cycle. It identifies menopause, again without tests, when they haven't had a period for at least 12 months and aren't using hormonal contraception.

The reason is worth knowing. During perimenopause your hormone levels fluctuate, so one blood result can look reassuring even in a bad week. A single result can't diagnose menopause either way.

NICE does consider FSH in two groups: people aged 40 to 45 with menopause-associated symptoms including a change in their cycle, and people under 40 in whom menopause is suspected. Even then, premature ovarian insufficiency needs more than one result to diagnose. If you're under 45, mention your age at the start of the appointment, because NICE treats that group differently. When a hormone result would help, Dr Sheehan can arrange our female hormone and menopause blood test as part of your plan.

Other blood tests can still be useful when the doctor wants to check for another cause, such as thyroid disease, anaemia or a metabolic problem. Those answer a different question from whether you're menopausal. If you already have recent results, bring them. If you don't, book anyway.

Do you need a specialist referral?

No. Our menopause clinic is a GP clinic, so there's no consultant waiting list to join. Dr Penny Sheehan sees women at 117a Harley Street on Mondays and Wednesdays, and you can book directly.

The appointment covers what has changed, whether the pattern fits perimenopause or menopause, and a plan for what, if anything, would help. A specialist is the right person for a few specific problems, covered further down, but ordinary perimenopause symptoms can start here.

It helps to arrive with a short note of what has changed in your sleep, mood, flushes and cycle, the names of your current medicines and any hormonal contraception, and any recent results, even if they feel incomplete. That way the time goes on decisions rather than on reconstructing the last two years from memory.

What can perimenopause symptoms look like?

They look different in every woman. People book with hot flushes, night sweats, broken sleep, mood changes, brain fog, joint pain, a change in libido, vaginal dryness, weight change, palpitations or urinary symptoms, and often with several at once.

Some of those have other causes, which is why your history matters more than a search result. Thyroid disease can mimic flushes, palpitations and mood change. Iron deficiency can mimic fatigue and brain fog. Anxiety, medicines, alcohol and shift work can all wreck sleep with no hormone change behind it.

Palpitations deserve a proper check, and NHS.uk lists a fast heartbeat among the reasons to contact a GP. If symptoms are new, severe or getting worse quickly, see a doctor the same day through same-day GP or emergency care rather than waiting for a Monday or Wednesday clinic.

Which appointment should you book?

There are two, and they do different jobs.

Book the focused consultation if you want answers and a plan. Choose the screen if you'd also like a midlife baseline in one package. The scans and bloods inform the conversation, but on their own they don't diagnose menopause or decide whether HRT is prescribed.

Hormone replacement therapy is discussed if it's appropriate once Dr Sheehan has reviewed your history, current medicines and any suitable recent results. A prescription isn't guaranteed at the first visit, and if HRT turns out to be the wrong treatment for you, non-hormonal options and lifestyle strategies may be discussed instead.

If you already have a prescription, want to transfer one from another clinic or need later monitoring, the HRT clinic is the better fit, and it carries the prescribing detail. Our guide to what an HRT review involves explains the follow-up.

Bleeding or pelvic pain: seeing our gynaecologist

Postmenopausal bleeding, heavy or irregular bleeding, or pelvic pain are best assessed by a gynaecologist. At Medical Express Clinic that's Dr Hikmat Naoum, Consultant Gynaecologist, from £250, or £450 with an ultrasound in the same visit. Any bleeding after the menopause should be checked promptly.

Our sister clinic also runs a specialist menopause service. If you're unsure who to start with, this guide on whether to see a GP or a gynaecologist first sets out the choices.