Fear of Consummation: Juliet is worried about consummating her marriage with Paris, whom she does not love. She speaks about the "fatal night" when she will be forced to give up her virginity and fears the pain and loss of innocence associated with it.
Fear of Consequences: Juliet also fears the consequences of her secret marriage to Romeo. She knows that their union is forbidden by their feuding families and worries about the potential repercussions, such as banishment or even death for both of them.
Fear of Betrayal: Juliet expresses her fear that someone might betray her and reveal the secret of her marriage to Paris. She is aware of the risks involved and is paranoid about the possibility of being caught and punished.
Fear of Loneliness and Isolation: Juliet is afraid of being alone and isolated from the people she loves, especially Romeo. She imagines herself as "an outcast" and worries about being rejected by her family and friends if her secret is discovered.
Fear of Death: Ultimately, Juliet's soliloquy reveals her fear of death. She mentions the "loathsome grave" and contemplates taking her own life as a way to escape the difficult situation she finds herself in.
These fears and concerns highlight Juliet's internal struggles, her determination to protect her love for Romeo, and her willingness to take drastic measures to avoid an unwanted fate.