Okay I woke up the other day with a soreness right at the top of the hood of my vagina where the slit just begins. There was a small red bump and it was sore. Today (the next day) it has turned into a larger bump but more spaced out maybe about half the size of a dime and is a little white. There is no puss, it's external. What is it? Should I be worried and get it checked out or will it pass? Please answer fast! Thanks