Itchy vagina/burning and painful sensation

My vagina has been experiencing a lot of itchiness in the past few days. I really don't know what might be causing this. I also have a burning and painful sensation if i scratch it. What home remedies should i try? Im thinking coconut oil or plain yogurt. Could it be that maybe I have not been lubricated during sex or that a couple of days ago I used castile soap, peppermint, as body wash and some ended in my vagina by accident and maybe irritated it?