my dear i don't know how to help u out bcos I am not aware of ur actual significant findings.
first let me tell u that a disc bulge at c6-c7 is definitely not going produce chest pain
as the the dermatome distribution doesnot reach there on chest region to mimic heart disease
u hypothyroid state will produce raised cholesterol
levels and correction with euthyrox
but if u r in high risk category for CAD then better u take medication for dydlipidemia until corrected.
chest pain evaluation needs a more detailed history.
but it is worth while after treatment to undergo a TMT bcos a plain EKG might not be actually useful.
please feel free to give me more insight into ur chest pain details. I maybe of help.
take care of urself.