Suggest Medication For Lump On The Labia

I am 15, I am a virgin, and I just recently started to masturbate. I don't use anything but my fingers and I usually have clothing between me and my clitoris. I just noticed a small lump on my labia minora. It hurts and its swollen. I've also noticed that it is very itchy. Do you have any idea what it is or what to do about it?