vaginitis?

help help help pleaseeee!! starting yesterday afternoon (when my period ended) my vagina starting itchy like crazy after school. just by reaction, of course i was gonna itch, but eventually it got serious and wouldnt stop. i went to shower to clean myself.. after that it kept itching so i just jept putting water. this morning it was even crazier. i could mever find comfortable positions to sit and always rushed to the bathroom to clean myself again, i sat on the toilet with wet toilet paper about to pee but ir burned like hell. i stopped after half a second and wiped myself fast. the rest of the day i was in incredible pain, itch, swolleness, and everything was terrible. every time i wiped this weurd discharge that was a very faint yellow mucus was always there. whenever i sat i had to with legs wide.. i got home now and checked what it looked like with a mirror and i almost cried. there were white specks or dots on my anus, inner vagina, and underneath my labia. it was extremely red and swollen. usually my lips are always out, but even when i was sitting down, legs wide open, they were almost glued together.. even if they werent thet were big enough to only show the lips and no part of anything underneath. they were giant. im 13 and i can hardly hold a guys hand longer than 5 seconds. ive had inflammation from pads in the past, but the white dots are what throw me off. im scared to go to a doctor or my mom about it. i feel like shell get disappointed and believe its sexually transmitted.. i also shave but the last time i did was 3 weeks ago, so its kinds stubby..