I AM having this hard time breathing. I have had it before but seems bad. have had it since last night so went to the ER this am, they did a chest xray, listenened to my chest, did blood work w/heart tests and blood clot test, then did a ct scan w/dye to make sure nothing going on there. I am still having a hard time breathing off and on. When I take a Prilosec, it helps for while. Is this anxiety, or something else. What else could it be and should I be worried? Is it related to my stomach? Could GERD cause this? I have to stand a certain way and cross my arms or I feel like I can't breath right.