From another SOB'er :), I know how you feel. If you do have a family history, it's good to be checked out - I know it's scary. However, I'm so glad I know what I can and can't expect from my body, and my spells of having shortness of breath turn into uncontrollable panic have stopped now. It took several months for me to get through my head that my respiratory system was fine, but I do feel so much better now when I start feeling SOB and can tell myself it won't really hurt me.
Co-Moderator, Anxiety and Panic Forum