I have uncontrolled hypertension and began having nagging ache in my left arm, and occasional pain in my upper back, and ocaasional discomfort in my chest...so I had a thallium stress test...during the period in the test when they sent me home for a couple of hours and told me to return later, I had severe pain in both arms, was nauseated, and slept until time to go back...i told them about it, but they were not concerned...when i got the reults of the test, it wa normal...should i still be concerned? could there be a problem with my heart that did not show up? or what else could it be? thanks