Amy, my heart goes out to you. I have had those kind of "force 10" attacks and they can be devastating. I actually had a friend take me to the psychiatric hospital after a game of tennis because I was so terrified. Whenever I have those kinds of attacks I feel utterly exhausted after, almost like I am suffering from the flu. I just do whatever I can to take care of myself for a few days after. There are certain things that make me feel a little better, or more safe or something... not sure how to describe it... but I do them all. Definitely follow up with your doctor because mine gave me something to take as needed when I get a strong attack. It has the nice side effect of making me drowsy which is useful at night. Take care, Rachele