Yeast infection

Has anyone here had a yeast infection? I think I might have something like that from having frequent intercourse in hopes of conceiving. My labia have been so itchy and on fire the last couple of days. It's really irritating and distracting. I don't know what else it could be. Does anyone have recommendations on how to cure this fire down there? I've been applying coconut oil which seems to tame it somewhat. Just wondering how long this'll last? Help!!