10 POINTS: HELP ME WITH THIS PROBLEM VIT PLEASE!!?

OK so its not a white head, there's no sign of any puss and it doesn't look it either. I tried squeezing it...doesn't pop. Just hurts. It only my nose. My sis said its a vit, but i been putting acne stuff one it for about three days now. It hasn't gone down it just there!! I have a really special day tomorrow and its not going away. How do i get rid of this!!