This morning I woke up and started having chest pain went to the ER they did a xray ekg and said everything was fine. I came home and I have sharp pain in the heart area it is in the same spot it keeps coming and going this has been happening since about 1 o'clock it's not 6:15 now I have some chest tightness and back in back on same side I'm 18 5'10 260 pounds I do smoke and drink alchohol on a daily basis! I do have anxiety so this is very scary please help???