Being unprotected normally manifests itself within the emotional and spiritual bodies. Below is a list of some symptoms you may feel if your energy field is unprotected:

Tired / weepy

Drained

Nightmares

Easily influenced by others

Threatened/defensive

Feeling other peoples emotions/pain Irritable/losing your temper

Copying or living your life through others

On a physical level you can feel pain in the back of your neck, solar plexus, or wrists.