You are dealing with a fundamental life issue..the issue of absolute safety( an illusion) vs. realistic safety. You have some all or none thinking going on...if not absolutely safety, then not safe at all...a good cognitive therapist should be able to help you with this..or if you can find a copy of my book Transformations..in the library, it is all about what you need to know.
SO! everything you said, ita4me ,i can relate to down to a t!! The heart palpatations, the headach all of it! Every headache, every pain, is a blood clot or a seizer or a stroke. And my biggest fear is that one I'll be alone when no one can call for help if i need it, or that it will happen in my sleep. I will wake up in the middle of the night terrified if I relax into sleep my heart will stop and no one will know until morning when its too late. Along with these fears is the additional worry, that one of these times i really WILL be sick and it will be written off as panic by myself or others until its too late. I not only worry about the physical things, but during these times when i have repeated attacks Im so scared I will just loose my grip on sanity. I want so much to be a normal 18 year old without these worries but it seems impossible. Im scared I will always need these medicines. How can i live without this? How can I go back to normalicy. i was not always scared. this... condition came on suddenly my sophmore year of highschool and never left. I refuse to live my life this way, but can find no answers as to how to stop it. If only it was as easy as to just tell myself its nothing.