Um....when you use a tampon, how do you know when it's all finished & your ready for a clean one?
You are asking when it is the best time to change your tampons, right? How will you know when is the best time to change it. It is very important that you feel fresh when you are using tampons. That is the main aim, to be clean and fresh all day long. Generally, every girl is different and it depends on when you really need to change it.
Some experts say that you should change it more often if you are having heavier periods.
I think that you should change your tampons every two hours, and you should check is everything OK in your bathroom more often.