I have a bump the left lip on my vagina, about the middle of being between my clitoris and vaginal opening. It was what looked like to me was like a bubble or something that was very small like a pubic hair folicule, that when i scratched it off became swollen, red or irritated. About two days later, it became a hard inner oblong feeling ball. When i squezed that ball, pus ozzed out a little and i wiped it off... ozzed out pus a few more times, wiping repeatedly after squeezing, then turned bloody pus coming out clearer each time after. The day after, i woke up to that oblong hard feeling ball, filled with pus, and bloody pus. What might it be? How can i get rid of it? Is it an std or something?