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Menopause is confirmed after 12 months without a period. Learn how to tell if you use hormonal contraception, a hormonal IUD or HRT, or have had a hysterectomy.
You know you have reached menopause once you have gone 12 months in a row without a period, with no other cause. You can only confirm it in hindsight. It is harder to tell if you use hormonal contraception, a hormonal IUD or HRT, or have had a hysterectomy. Then, age, symptoms and sometimes blood tests guide the decision.
The World Health Organization defines natural menopause as 12 consecutive months without a period, with no other physical cause and no medical intervention responsible.
In practice, that means:
The UK’s National Institute for Health and Care Excellence (NICE) advises that, for otherwise healthy people aged 45 or over who are not using hormonal contraception, menopause can be identified without laboratory tests once there has been no period for at least 12 months.
For an overview of the stages, see the stages of menopause.
Before the final period, most people notice:
These signs suggest you are in late perimenopause, not that menopause has already happened. See the stages of menopause for how each stage is defined. See the early signs of perimenopause for what comes first.
For most people over 45, no test is needed, and hormone tests can mislead. FSH levels swing during perimenopause, so one high result does not confirm menopause, and a normal one does not rule it out.
Blood tests are more useful:
See perimenopause tests for what each test can and cannot tell you.
This is where it gets harder. Here is how the main situations are usually handled.
Combined methods cause monthly withdrawal bleeds, which are not natural periods. They also mask menopause symptoms and make FSH results unreliable.
Under UK guidance from the Faculty of Sexual and Reproductive Healthcare (FSRH), the combined pill can be used until 50 if suitable, and the NHS does not recommend it from 50. After that, people usually switch to a progestogen-only or non-hormonal method, which makes it easier to judge what is happening.
These methods often make periods irregular, light or absent, so you can’t rely on bleeding. The FSRH describes two approaches:
The injection is usually switched to another method at around 50.
The hormonal IUD often makes periods very light or stops them. That makes it hard to know when natural periods would have ended. The FSRH supports keeping a hormonal IUD inserted at 45 or over in place for contraception until 55. Your clinician can use your age and symptoms, and sometimes FSH tests over 50, to judge your stage.
A hormonal IUD can also provide the progestogen part of HRT, so it is often kept if you start estrogen.
HRT can cause regular or irregular bleeding depending on the type, and it relieves symptoms, which hides the natural pattern. FSH results are also unreliable on HRT. Clinicians usually rely on your age and history:
Unexpected bleeding on HRT, particularly after the first few months or after a period of no bleeding, should be discussed with your clinician.
Without a womb, you won’t have periods to count, but your ovaries still go through the transition. NICE advises identifying menopause from the type and pattern of your symptoms, such as hot flashes. The NHS notes that menopause may come sooner than it otherwise would after a hysterectomy.
If both ovaries are removed before natural menopause, you reach menopause immediately, whatever your age. No waiting period or test is needed. See surgical menopause.
Ablation treats heavy periods by removing the womb lining, so periods may become very light or stop. Like a hysterectomy, this removes your main sign of the transition. Symptoms, age and sometimes blood tests guide the decision.
Cancer treatments can stop periods, sometimes temporarily. Periods and ovarian function may return months later, especially in younger people. Your cancer team can advise on contraception and how to judge whether menopause is permanent.
Knowing whether you have reached menopause affects several practical decisions:
It is very common not to know exactly when menopause happened, especially if you have used hormones for years. That is usually fine. Clinicians use your age, symptoms and history to make practical decisions, and UK guidance allows contraception to stop at 55 regardless.
Keeping a record of any bleeding and symptoms helps. Our private Symptom Explorer can help you track them. For the questions to ask, see your first menopause appointment.
Get checked promptly if you have:
- Any vaginal bleeding 12 months or more after your last period, however light
- Bleeding after sex or between periods
- New or unexpected bleeding on HRT, particularly after an initial settling period
- Periods that stop before age 40
Not yet. Menopause is confirmed after 12 months. Periods can still return, so keep using contraception until guidance says you can stop.
For most people over 45, blood tests aren’t needed and may mislead, because hormone levels swing. Tests are more useful under 45, or over 50 on some progestogen-only methods.
A hormonal IUD often stops periods, so you may not know exactly. Your clinician may use your age and symptoms, or FSH tests after 50. Under UK guidance, a hormonal IUD fitted at 45 or over can stay in place for contraception until 55.
Bleeding 12 months or more after your last period counts as postmenopausal bleeding. It needs to be checked by a clinician, even if it is light and you feel well.
Under UK guidance, yes. If your last period was at 50 or over and you are not using hormonal contraception, contraception can stop once you have gone a full year without a period. Check with your clinician if you are unsure, or if guidance differs where you live.
Editorial status: evidence-based educational article; not individually medically reviewed. Last evidence check: September 10, 2026.
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