What three fears does Juliet revale in her soliloquy in scene 3?

Juliet has a number of soliloquys. In my favourite one, "Gallop apace, you fiery footed steeds", she does not express any fears, just her anticipation of how good it will be to have Romeo in her bed. More likely you are asking about her soliloquy in Act IV Scene 3, "Farewell! God knows when we shall meet again." In the course of it she expresses several fears: "What if this mixture do not work at all?", "What if it be a poison which the friar subtly hath ministered to have me dead?", and "How if, when I am laid into the tomb, I wake before the time that Romeo come to redeem me?"