What idiom should I use to describe my nervousness and fear?

Fear, fear, fear, fear all day.

Cold, sadness and fear

Afraid. Earth-shattering It's thrilling. In shock. Afraid. Afraid. Cower.

Shocking. Have a lingering fear

Nervous, stuttering, incoherent, hesitant, flustered, pale as a sheet \ fearless, restless, frightened, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared, scared.

Be frightened to disgrace, my courage is cracked.