Many time i have done ecg but nothing found and before 3 days tmt and echo done tmt was negative and echo shows diastolic dysfunction grade 1..Doctor said its normal nothing to worry but my mind is not in peace..always having fear of progressive of this. Is there any serious illness related to heart and why at age of 35 m suffering from this..whenever i think about this, can feel symptoms related this..i always think that my heart is weak..plzz Guide me...