I had a few spasms but I managed to not be too stressed out once I knew and understood it was all related to GERD and that I was not having a heart attack...I have had some success with my chiropractor for my hiatal hernia, and it also helped reduce the spasms, if you google for info it might be something you might want to try..
I wouldn't be scared because your symptoms are classic GERD, and so your not unique, and your definitely not going to have a heart attack, once you really believe that things should be easier, as stress can only exasperate GERD
Samantha, 45 yrs
Diagnosed. Left sided UC, 8th Feb 2014
2 x Ultimate Flora 50 billion probotics, Vit D, and Multi vitamin tab daily.
Stopped smoking Jan 2013.