Itchyyy

Okay so this is the second time this has happened. So yesturday "down there" was itchy so I scratched it and it just got worse and worse to the point where it inches on the inside. I always keep my "situation" situated I make sure I'm clean and change my underwear every day. There is no discharge or smell it's just hot and dry.  I've used coconut oil and it helped I ask my mom and she said maybe it was a yeast infection but there was no smell or discharge. Any ideas!? Does this happen to anyone else?