Girls usually have vaginal discharge, mostly due to the changing hormone levels in their bodies. The discharge is usually experienced about six months before a girl's first period and its quite normal. The discharge is mostly mucus-like in nature and goes on in some women until menopause.
1 Additional Answer
Discharge is a normal way by which the body discards fluid and old cells. A discharge is usually said to indicate an infection if it causes itching, swelling or has a bad odour. One therefore needs to seek medical attention in case of an infection shown by these variations of the discharge.