I had an EKG today, the one I had a little over a week ago said Normal ECG, They checked my heart because I had Peumonia. They did one today because my chest had been hurting all week, but it hurt to the touch, so my doctor said it was costacondritis, but decided to do an EKG anyway. This one came back as; Borderline ECG - T Wave changes in the septal lead - These minor changes are of equivocal significance only. What does all this mean, and is it serious