the red dots could be because you are scratching so much or it could be Genital Herpes. if they turn yellow and start to pop then yes, it probably is herpes. other than that its just a yeast infection
Hell and vaginas don't belong together. Can you talk to your mom about the possibility that you have a yeast infection? If not, things like Monistat are available (over the counter, you don't need a prescription) at the drugstore, but it's nice to have an older female relative to help you get stuff like this. Try it, and if you get no relief, see a doctor.