Two periods in one month in perimenopause
Why periods can come twice a month in your 40s, how short cycles fit perimenopause, what else causes it, and which signs mean you should see a doctor soon.
The Peri Signals editors
Editorial desk
About
The Peri Signals editors
Editorial desk
The Peri Signals editors keep the site's pages current: they check every health fact against the source it links, update pages when guidance changes, and correct errors readers report.
Last checked 2026-11-01
What The Peri Signals editors covers
- editorial standards
- corrections
- site pages
How this byline works
Sources reached for first: the linked guidance pages.
What you will notice in the writing:
- short declarative sentences
- names the source in the sentence
What this byline never does:
- opinions on treatment
- marketing language
Every article on Peri Signals links the health guidance it relies on, and none gives treatment advice. The rules are in our editorial policy. If you spot a mistake in anything signed The Peri Signals editors, send the page and the source and it will be checked and corrected.
Recent articles
All articles
Perimenopause or thyroid? Telling symptoms apart
Tiredness, weight gain, low mood and period changes fit both perimenopause and a thyroid problem. The clues that point one way, and when a thyroid test is used.
PMDD or perimenopause? How to tell mood symptoms apart
PMDD and perimenopause both bring irritability, low mood and anxiety. How timing against your cycle tells them apart, and why PMDD can get worse in your 40s.
Spotting between periods in perimenopause
Is spotting normal in perimenopause? Why light bleeding between periods happens in your 40s, the other causes, and when to report it to a doctor.
Heavy periods and blood clots in perimenopause
When heavy bleeding, flooding and clots in perimenopause are expected, the measurable signs that a period is too heavy, and when to see a doctor.
Irregular periods in perimenopause
How cycles change in perimenopause: periods closer together, longer periods, skipped months and long gaps, what is expected, and which changes to report.