Hi, there.

The lining of your vagina can change depending on where you're at in your menstrual cycle. If you haven't started your period yet, I don't know exactly how to answer you -- but I'm not a doctor or nurse. :)

As your hormones change throughout the month, your mucus will change. Sometimes it is gloppy and stringy, and there is a lot of it; sometimes you won't notice any at all. It is also a little bit different for every woman. Most likely, this is completely normal. But if you're concerned, talk to your mom or talk to your doctor/nurse about it for some reassurance.

If you're experiencing any itching or burning with the discharge, it might be a yeast infection (which are very easy to treat).

Here are some other websites with good health information that you might find helpful:

http://www.teenwire.com/

http://www.sexetc.org/

http://www.goaskalice.columbia.edu/

http://www.scarleteen.com/

http://www.ourbodiesourselves.org/default.asp

Hope that helps!