Back after 3 good months with chest pains

I went to the heart hospital emergency room for the third time in 3 years thinking I was having a heart attack. I have had every heart test other than the angiogram and I am scheduling that tomorrow. It really is scary when that pain is behind the breast bone and now that I am in my sixties, it worries me more. My cardiologist has Run stress tests, nuclear stress tests, echoes, holster monitor and extensive blood work. Everything came back negative and he says we will do the angiogram but he doesn't think he will find anything.i have suffered digestive issues since 2011 as many of you know and had CTs , stomach emptying, HIDA,nam all Howell,nendoscopy, colonoscopy etc. all that was found was slightly slow emptying and low functioning gallbladder so gallbladder was removed. I didn't get better. My question is this: do many of you suffer from these terrible chest pains and then go months without them only to return.? I do take tums and Zantac when I have it however, the Zantac doesn't completely eliminate the pain. Sometimes I feel like my whole upper body is inflamed and sore including my upper back and neck in addition to my chest discomfort. Should I have the monometry and impedence tests. How did you find out it was definitely GERD? As many of you, I am just so frustrated. I can go months with no symptoms and no meds and then it returns.
I have been using some Young Living oils -- particularly DIGIZE and also a roll on combination of oils called TRANQUILTY which I think helps some and I feel these oils are very safe and pure. I feel like I write the same things whenever I get back on this site but you have all helped me so much in the past.