hey garace,
i know exactly what you're going thru!! i was ready to go to the er this morning because i thought i was having a heart attack. my husband said honey come on your only 35 yrs. old!! i too have been thru all the tests from the cardiologist, echogram, halter monitor- the only one i have not been thru is a stress test & i'm ready to have that done next, to help put my mind at ease. i can just be laying there watching tv & my heart will start racing for no reason!! i am pretty healthy, other than i smoke, but the crdio dr. told me i have no risks other than smoking, but when i tried to quit a couple mos. ago, my anxiety level tripled.
all i can tell you is to hang in there, sooner or later it has to get better!! keep sharing your thoughts with all of us, i found that has helped me.