I'm a hispanic male,49 yrs old who will turn 50 in december. I'm type 2 diabetic with high blood pressure. Last week i had a EKG and yesterday a Nuclear Stress test and both were normal.I don't have headches or chest pain but a slight jolt on left side of chest, kinda under the underarm. I do have a history of back issues(pinched nerve, muscle spasms, etc).With EKG/Stress test normal, should i be concerned it's heart related?