This just popped up in my head and its been bugging me ever since!!! grls plz!!!!?

ok... the other nite while i was laying in bed, i thought to myself would your chest be smaller if you always slept on your stomach or bigger if you laid on your side or on you back??? i no that ques. might of sounded weird but i was just wondering....and also im 13 and havent had my period yet, ive had A LOT of wite/clear discharge since mid july. there is never one day when i dont have wite discharge....i no its not an infection....it doesnt smell....do you think you could sum up and answer to when you think this annoying wite discharge will stop and ill just get my period already?? and also my are small, 32a and all my sisters have humongo . i have 3 sisters. on a scale from 1-10 how much do you think ill take after my sisters??? PLZ ANSWER!!!!