What’s a Yeast Infection?
Yeast are microorganisms that naturally live down there. When the yeast overgrow (antibiotics, wet bathing suits and tight clothes can cause this), they irritate vaginal skin. You shouldn’t notice a weird odor (that’s another treatable infection), but you will itch like a baboon.
Even though there are over-the-counter remedies, see a doc for a diagnosis, especially the first time you have one of these pesky infections.