Why?
Why do girls have periods?
When girls are born, they have thousands of ‘eggs’ inside their ovaries. After reaching puberty (around 11 to 15 years) roughly every month, this is what happens:
- one egg pops out of the ovary because of hormone changes in your body
- swims along to your womb via your fallopian tubes (the womb is where a baby would grow if the egg had been fertilized by a man’s sperm)
- the wall of the womb gets all thick and ready every month, just in case a fertilized egg needs to grow there
- If the egg does not get fertilized by a man’s sperm, then the egg and the lining of the womb, come away
- They come out through the woman’s vagina - but don’t expect to see the egg because it is less than the size of a pinhead and is all mixed up with the blood.
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