I'm a female, age 17, and for as long as I can remember, I've had this soft-ish lump on the top opening of my vagina, and it leads to the inside, it's quite prominent but not larger than a cherry. I have no clue if that's normal or not..
It hurts a little if I press down with moderate pressure, but not painfully a lot. It kind of has this ribbed feeling on it, and when I put tampons in, it hurts a lot because it's scratching against/pushing too hard against it.