I am so sorry you did not receive a reply from any of the members. Please accept my apology.
I am wondering what the DR. feels may be causing this type of bruising? I am familiar with disorders that cause bruising but your lab work was fine and usually with a bleeding disorder you will see some change on the lab work.
I have never experienced anything like this and I hope your August 20th test may find something that would help the Drs. come to a conclusion re your sx.
To the best of my knowledge, unless the EKG is being run while you are having the heart attack, then it may be possible you could have a mild heart attack and afterward have a normal EKG.
Was your blood checked for elevated levels of troponin (cardiac muscle proteins that, when elevated, are a real indicator of a heart attack)? I would guess that this blood test was run. The troponin test measures the levels of certain proteins called troponin T and troponin I in the blood. These proteins are released when the heart muscle has been damaged, such as a heart attack. The more damage there is to the heart, the greater the amount of troponin T and I there will be in the blood.
The troponin test may also be done to help detect and evaluate other causes of heart injury.
I cannot tell you what is going on but I would strongly advice you to keep on advocating for yourself and if your next test is normal and you are still having the same issues seek out another physician for a second opinion.