Hi there ~
I understand your concerns. It seems to me with the description of your problem that you need to consult a cardiologist
or a doctor who can run a cardiac profile and send you to a specialist if necessary. I believe that the pain is cardiac in origin, and if it is not from the testing that is performed, I would think about neuromuscular origin or the pain. And, taking the right kind of food as well as medication will help with the high cholesterol
even if it seems to be genetic. I hope this helps.
Take care and have a lovely day!