Why are there
so many
different sizes?
We're all different and that's true about your period too. You might have a very light flow or a very heavy flow. This is why tampons are available in lots of different sizes or absorbencies as they are often called.
Here’s an example of what your period, also known as menstrual flow may look like.
The higher the line goes up, the heavier your blood loss.
As you can see, your period flow can differ from day to day and if you use tampons, you may need to use different sizes for each stage of your period.
Some girls may use up to 3 different tampon absorbencies during their period.
Sometimes the 2nd and 3rd days of your period can be your heaviest and after this your period flow may start to get lighter.
But this is not true for everyone and you'll have to work out your own pattern as you become familiar with your period.