Severe cardiac anxiety.in treatment.ecg and holter came back ok.new sensation above left breast.felt as if skin was being pulled for 5 sec. anxiety?

Psychotherapy: It could be anxiety. If your anxiety symptoms are severe enough to justify the medical workup you had, then you should definitely be seeing a psychologist for treatment. Medication alone (zoloft) is not optimal care. Psychotherapy should be part of your treatment plan, and should help you address the causes of your anxiety (not just symptoms).