Yesterday I was having really bad chest pains and back pains I thought I was having a heart attack went to emergency room and they took my ekg , the pain was so bad it hurt standing straight up ,burp, cough or drink something or eat it really hurts , today the pain is still here but not as bad as yesterday today it's more in my right upper back , and something hurts when I cough , burp , drink , eat , chest hurts alil , bending down hurts moving my right arm hurts what can this be ekg came back normal