There is one STD (sexually transmitted disease) called Trichomoniasis , or Trich for short, that will cause itching, and a fishy odor
. Typically you will have strong fish odor
, and frothy, greenish smelly discharge. These are all treatable with antibiotics. You absolutely HAVE to tell your Mom, or someone you can trust, like an Aunt, Grandma, even the school nurse. Please please don't be embarrassed, it's absolutley nothing to feel ashamed about and has happened to the best of us.