How periods can change
During perimenopause, periods may become:
- closer together or farther apart
- longer or shorter
- heavier or lighter
- less predictable from month to month
These changes can happen gradually and may look different for everyone.
Other changes you may notice
Some people also notice changes in:
- sleep
- temperature regulation
- night sweats
- mood
- energy
- headaches
- concentration or brain fog
- other physical symptoms
Why tracking can still be useful
Tracking doesn’t have to be about predicting your next period perfectly.
RedBird can help you build a personal history of:
- period dates
- cycle length
- bleeding patterns
- symptoms
- sleep changes
- mood
- energy
- temperature-related experiences
That record can make it easier to look back and see how your experience is changing over time.


