question: Hi I’m a 56 yr old female with no thyroid on synthroid & Hugh blood pressure meds. Been told I have a slightly enlarged heart & mildly leaky valves. Driving home a half hour ago I felt squeezing in my chest. No pain but it took my. Breath for a second then I started shaking. Hubby checked my sugar level when I got home & it was 81. Should I be concerned about my heart or anything?