What is a period?
A period is monthly bleeding from the uterus when its soft lining sheds. It usually starts between ages 9 and 15 and lasts 3 to 7 days.
See a doctor if no period by age 15, or bleeding is extremely heavy.
At a glance
Do
- Track your cycle dates
- Change your pad or product on time
- Drink water and rest when you need to
Do not
- Do not feel shy or hide your pain
- Do not use one product for too long
- Do not ignore very heavy bleeding or fainting
Before you start 0 / 3
Steps
Each month the uterus builds a soft lining.
If no pregnancy happens, the lining is not needed.
It leaves the body as blood and tissue. This is normal and healthy.
Track the first day on a calendar to learn your pattern.
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Period pain and relief
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Pads, cups and tampons
Learn the choices and how to use each safely. Pick what feels comfortable....
Irregular periods
For the first 1-2 years after the first period, cycles are often irregular. Later, stress,...
Last reviewed: 31 October 2026 · About and sources
Sources
Compiled from these public health sources. This is education, not medical advice.