Chest pain & panic attacks

i have been diagnosed with panic disorder. I have been on prozac for a year with no problems then latly ive been experiencing pain in my chest almost rigtht on my left breast. I had an ekg, cardiac stress test all normal but one little ounce of pain throws me into a panic attack, i just want to feel normal. so if all the test came back normal then its not my heart right???? thanks sherri