Im 11 and i have heavy discharge before my first period?!?

Ok.. Im 11 and had normal clear discharge for already 3-6 months.. and a week ago i noticed some heavy discharge and i wear a pantiliner so its doesnt get on my underwear but its kinda watery only kinda... and its kinda heavy.. i can feel it coming out and no odor and no pain.. just discharge... i'm a virgin no outercourse neither... am i pregnant, yeast infection , or period coming? HELP!