I have struggled with anxiety for awhile with no medication, and right now I have had post-concussion symptoms for 2 weeks. Something has happened that triggered my anxiety tonight and I haven't been able to sleep, I have a numb sensation through my body, I'm lightheaded, I'm shaking/trembling badly, and I'm sick to my stomach. Is this an anxiety attack or should I see a doctor to check on my post-concussion syndrome? HELP!