shooting pains

out of no where i had really bad shooting pains in my stomach around my ribs and some chest pains right when i layed on my bed!!  but i did have chest pains a couple of weeks before hand...my gasterologist believes its gas/acid. the shooting pain like burns too my sister had this before too, but hers went away within a couple of months.  but, have any of you guys ever had these shooting pains? at times i get like anxiety attacks and my body shakes cuz it really scares me. (i get nervous really easily) please help! advice would be great! 
Hi i went to the emergency room and i thought i was having a heartattack. Sharp pains in my chest and arms. alot of discomfort.they told me i had gerd i wanted to know how in the hell can gerd cause all of this pain. i also started to shake uncontrollably last night thinking it was a heartattack and i guess it wasn't.What other symptoms do you have and what makes them go away.