Alarmed

[Sarah]

Aroused to vigilance; excited by fear of approaching danger;agitated; disturbed; as, an alarmed neighborhood; an alarmed modesty.The white pavilions rose and fell On the alarmed air. Longfellow.

[Sarah]

Afraid or mindful of something that you've already mentioned

[Dave Paprocki]

worried or frightened by something:

[Lizzy Liz]

Frightened or concerned that one may be in danger or that something undesirable will happen.