I'm no Dr. but it could be that you are under a lot of stress
and it could be an anxiety
attack, I know I can feel this way when stress is at a all time high. Try some relaxation techniques
this may help, take a walk or a long bath. I know exercise for me is a stress reliever. Whatever helps you to relax try it. If that don't work definitely get another opinion from another Dr. Oh the chocolate suggestion could be caffeine.