It won't go away

I am 25 years old and I have a semi hard, 1 inch wide, raised, purplish/brown cyst right where you'd expect to find a Bartholin's cyst. I went to my dr. I am healthy (std free) and the Dr.s were stumped. They said it is NOT a Bartholin's cyst, but it IS a cyst of SOME unknown kind. It's not painful, or tender. In fact, if I hadn't thought to look in the mirror for some unexplainable reason, I'd never know it was there. Dr. aspirated it. Just days later it came back in the same spot, same color, same size. WHAT is this in my vagina? Months later, it's still here. No changes. I'm unsure what to think, or what to do. Dr.s were of so little help. Tweet