Girlss (ONLY) please im so scared.?

kayso i was wiping after i had used the washroom and this white stuff so i got concerned so i put my finger in and it was clumpy the discharg that came out..i kept doing it to try and take it all out but yeah it didnt umm do i have a yeast infection? there is no irritation at all i wash down there daily its summer so i wear shorts and its really hot and they are kinda tight alot of my clothing is tight i get this discharge alot like somtimes it goes away then it just comes back is it because of my period? im so scared cause like i dont want it turning into something else im not ually active im 15 years old i cant go to my doctor hes so wack plus im not old enough and my mom.. our relationship isnt that close Will it go away? does it turn into anything else? it doesnt really have a smell but neither does my normal discharge its very faint you can smell it but its hardly there...i have masturbated before could it be because of that? im so worried.. i just want it to go away PLEASE HELP !! and um do Yeast infection at all go away on its own without like doctors help...