Bartholin Cyst?

So I think I have a Bartholin Cyst on the outside of my labia. It doesn't hurt but it a hard lump that I sometimes am able to get stuff out of. Whenever I "drain" it, it gets smaller. Has anyone else ever had one of these? Im 16 and really don't want to have to go to the doctor. Is there a way to get rid of it at home? Does anyone know what it's caused from?