This quiz is based on the four-stage framework developed by Dr. Jerilynn Prior, endocrinologist and founder of the Centre for Menstrual Cycle and Ovulation Research (CeMCOR). Answer 8 short questions about your cycle and symptoms to find out where you are in the transition.
Based on Dr. Jerilynn Prior's perimenopause staging framework, CeMCOR, University of British Columbia
Question 1 of 8
How are your periods right now?
Regular and predictable — arriving within a day or two of when I expect them
Slightly variable — shifting by 7 days or more in length but still coming every month
Noticeably irregular — I've had at least one cycle stretch to 60 days or longer
Very infrequent or absent — I've gone many months without a period, or it has been 12+ months
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Question 2 of 8
Has your flow changed compared to a few years ago?
No noticeable change — similar flow and duration to my usual
Heavier or longer than before, even if cycles are still regular
More variable — sometimes heavy, sometimes lighter than normal
Distinctly lighter, shorter, or more sporadic as periods become less frequent
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Question 3 of 8
How is your sleep?
Dr. Prior's research identifies sleep changes as one of the earliest perimenopause signs — even before cycles become irregular.
Sleeping fine — no change from my usual pattern
Waking in the night more often than I used to, even without obvious cause
Waking regularly with night sweats or feeling overheated
Significant insomnia — struggling to fall or stay asleep most nights
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Question 4 of 8
Are you experiencing hot flushes or night sweats?
Not at all
Occasionally — mild and easy to ignore
Regularly — noticeable and affecting my comfort
Frequently and intensely — disrupting sleep or daily life
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Question 5 of 8
How is your mood and emotional wellbeing?
Much as it has always been — no new anxiety, irritability or mood changes
Some new irritability, mood swings or anxiety that feel different from my normal PMS
More significant emotional changes — low mood, heightened anxiety, or feeling unlike myself
Mood has been difficult for a while but seems to be slowly stabilising
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Question 6 of 8
Have you noticed breast tenderness, soreness, or new lumps?
Sore or tender breasts are a key early sign identified in Dr. Prior's research, linked to high and fluctuating oestrogen levels.
No — breasts feel the same as always
Yes — noticeably more tender or sore than before, especially before my period
Yes — I've had sore breasts or new lumpiness that's different from my normal
This was an issue but has eased off as my periods have become less frequent
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Question 7 of 8
Are you experiencing vaginal dryness, discomfort during sex, or bladder changes?
No — nothing has changed in this area
Mild or occasional dryness or discomfort that I've noticed recently
Noticeable dryness, discomfort during sex, or changes in bladder urgency
More significant — affecting intimacy and comfort in daily life
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Question 8 of 8
How long ago did you first notice something had shifted — whether in your cycle, mood, sleep or energy?
Just recently — within the last year or so
1–3 years ago
3–6 years ago
More than 6 years ago, or I feel I'm nearing or past the end of this transition
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Your results are ready — where shall we send them?
You're one step away from finding out which stage of perimenopause you're in, and what it means for your hormones, symptoms, and next steps.
You'll receive:
Your personalised perimenopause stage result
A plain-English explanation of what's happening in your body right now