Hard Lump On Vulva

I have recently noticed this large lump .. slightly painful to the touch. It’s pretty embarrassing and I have no idea what it is. I don’t really understand what a cyst is but that’s what it could be. I’m just hoping it’s not an STD because I have performed song sexual acts at all. I am really confused.

I can’t really go to doctor because we can’t afford it and I’m not trying to waste our money if it’s something minute.

Please tell me anything you know about it.

It’s a hard lump on the right side of my vulva right above my lips.