Im 10 and going through puberty and having watery discharge?

Okay.. so i have really heavy watery discharge :P i wear pantiliners and they go thru my pantiliners and on my underwear... but i wanted to know if is my period coming soon like a month or so (please tell me about your experience) or i already had normal white discharge for 3-6 months.. and im thinking that my discharge is about to be over thats why only clear water type discharge is coming out.. I think i'll be starting spotting (Brownish Discharge) soon thats why my discharge is getting over with.. am i right.. please answer all the questions :)