This white stuff is coming out of my vigina(girls only)?

i think its discharge but im skared it might be a viginal infrection but whats comming out of my vigina is clear white and gooi and i think its coming out because ive never had my period before and it about to come. im 12 and im asking this question because its been happing so much latley, i used to only get it like once a week, but then i got to 2 times a week , and now its happing every day , like almost 3 times a day, when i do gymnastics i can feel my undies kinda wet, when i go to the bathroom when i whipe myself i see it (it happens when i poop and i push it starts to come out), is it a sine that my period is on it way, and about how long, and also a little more than a month ago i had theis really bad craps that hurt like crap and i coudnt take how much it hurt