I had a panic attack 5 days ago and since then I've had mild chest pressure/aching and a slight shortness of breath. I went to the ER on the second day (to see if my panic attack was actually a heart attack) and they gave me an (electric) ECG, blood test, x-ray, and they checked my blood pressure and heart rate. They said I was completely fine. Today I'm still feeling chest pain and I can't seem to take a deep breath. I've also been getting winded quite easily. Should I just ignore it?