How to track irregular periods during perimenopause
Track your changing menstrual patterns during perimenopause to understand your transition and prepare for healthcare visits.
Period irregularity is one of the hallmark signs of perimenopause. Tracking your cycle changes helps you understand where you are in the transition.
What makes periods "irregular"
During perimenopause, you may experience:
- Cycles shorter than 21 days or longer than 35 days
- Skipped periods (missing one or more cycles)
- Heavier or lighter flow than usual
- Longer or shorter bleeding duration
- Spotting between periods
What to track for each cycle
For every period, record:
- Start date — First day of bleeding
- End date — Last day of any bleeding/spotting
- Flow intensity — Light, medium, heavy (or use product count)
- Cycle length — Days from start of one period to start of next
- Unusual bleeding — Spotting, clots, very heavy days
Tracking gaps between periods
Pay special attention to:
- How many days between periods
- Whether you've skipped a period entirely
- Patterns in timing (e.g., every other month)
When to alert your clinician
Track these concerning patterns to discuss:
- Bleeding lasting more than 7 days
- Soaking through a pad/tampon in 1 hour repeatedly
- Bleeding after 12 months without a period (postmenopause)
- Bleeding after sex
- Spotting that doesn't fit your usual pattern
Understanding perimenopause staging
Healthcare providers use cycle patterns to understand your stage:
- Early perimenopause: Cycle length varies by 7+ days
- Late perimenopause: Gaps of 60+ days between periods
- Menopause: 12 consecutive months without a period
How to use Stabilize for this
Log each period with start/end dates and flow. Your cycle history helps track the transition and prepare for appointments.
What this page is / isn't
This page explains how to track menstrual changes during perimenopause. It does not provide medical advice, diagnosis, or treatment.