newdurham,
The J point is a normal variant of ST elevation which refers to a specific period of electrical activity on the ECG.
There would be no further testing to evaluate this finding and it carries no specific negative issues.
At 28 unless you have a very strong (and I mean VERY strong) family history of coronary disease, the chances of your chest pains originating from coronary artery disease is exceedingly small.
good luck
I forgot to mention that I also have 2nd stage Lyme disease for which I am being treated for the past 5 months- not sure if that changes anything.