Hey Everyone, Really Worried.

Hi im new, ive had anxiety disorder ever since I was young. I wont get too into it but for quite some time now ive had a serious problem. At night sometimes when im sleeping I get bad crushing chest pains. And I dont mean before sleep, I mean in my sleep I feel it, in my dreams too. Then when I wake up, I still have it, but it goes away within seconds. I am terrified that its sleep apnea. I sleep on the couch due to anxiety and I might have gerd. I have alot of stomach problems (nausea espicaly in the morning, heartburn. Etc). This problem comes and goes usualy its not there. I probably get it at most once a month sometimes a few days in a row. Today I got it and I noticed that my throat was sore for a bit I thought I was sick but I wasnt. I also hacked up some pieces of digested food that were stuck in my throat. (ew I know). Anyone have any suggestions as to what this could be? Thanks!