You are so not alone in the way you are feeling. Anxiety/Panic Disorder is scary, a paralizing fear that intrudes on your world.
I spent months convinced that I am insane, dying and that I have some disease or another. I still have my bouts every now and again.
Your not alone. Beleive me your not alone.
Check out this web site.
http://www.apa.org/pubinfo/panic.html.
It will give you symptoms that commonly occur with anxiety attacks and will help ease your mind. At least reading it in black and white helped ease my mind.
I hope that this passes for you soon. Please post as often as you need. Also, please feel free to PM me if needed. Take good care of yourself.
Huggles,
Jen