There's healthy discharge that every girl gets throughout life and as far as I can tell you cannot control it but you can eliminate the kinds that are linked to infections or other problems.
The article should help you out. My strongest recommendation is for you to head on over to a site designed for teens (I have ZERO connection to it btw admin) called Scarleteen.com They have a ton of fact sheets on discharge etc. annd interactive boards where you can ask these questions and have a qualified sex-educator give you information.
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