yeast infections

Hi, im 14 years old, and have strong reason to believe that I have a yeast infection. I kind of noticed a change in my vagina the day before yesterday. the change was that my vagina felt alittle sore, it was odd, but similar to the way you feel after having sex, so I figured thats what it was. until the next day I realized I hadnt had sex since last week. I didnt think of it that much after that. until the next day, my vagina was kinda of beginning to hurt. it felt like I had some kind of cut in my vagina? it was pretty strange. it wasnt extremely painful or anything, but it was definitely a noticable irritation of some sort. so I decided to (I know this sounds weird but I personally think it was awfully smart) get a mirror and look down there for myself, just to make sure it wsant like anything serious, such as an std. so I looked, and opened my lips (haha sorry) and on each said saw identical tiny white blotches. since it looked like the way it does after you accidently bite the inside of your cheek while eating, I figured no biggie, this is just a cut. then as the day goes by, I go to sleep and it was VERY annoying, I kept touching it with my hand because my hand was cold and made it feel better. then, finally today, I had woken up and the pain was definitely stronger then from the day before. it hurt in certin places when I sat down, and was basically kind of painful. not until I got to school did it REALLY start to bother me, because I was running around and it kept hurting when I sat down! so then during lunch I go to use the bathroom cause I had to pee pretty bad, so I do what every girl does, slide your pants and panties off, and when I did I saw what I usually see in m underwear, discharge, but it was sooo much thicker, and it was very odd. then while I peed it slightly stung, the tiniest bit. and as I wipped myself, that definitely hurts. so then I go throughout therest of the day, ignoring it. ofcourse I figure somethings wrong, but not till I get home. that was when I walked into my bathroom, and decided to look at my vagina with the mirror again. smart move I made man, cause my vag was grooosss. I opened the lips again, and it was all white blothes all everywhere! I just started pouring tears. to me, that was just extremely horrific, and disgusting. starnge to, because I take two showers a day, my panties are never too tight, and my man doesnt cheat on me, he lives next door so I couldnt of gotten it transmitted. so I firgure, its my hormones, as a growing teen and all. well, im still not completely positive if this is, a yeast infection, so if you guys could please help me, and tell me the quickest way tp get rid of this! because I havent had sex in 2 weeks now, and if this doesnt go away, I will not only be absolutely disgusted by the nasty appearance of my vagina, but I will also be horny. so please, help me! thanks. (: