Chest pressure
Others have reported chest pressure or tightness in the chest. I had this when I was getting worse last December and January. My doctor seemed to think it might have been stress/anxiety related because of worrying about the changes in my life and job situation. It might have been, but I am a pretty mellow person most of the time so it also might just have been the impact of this illness on my body. You should be reassured a lot that it does not occur with nor get worse with activities. This should happen if it were heart related. A couple of things to think about. First, acid reflux can cause chest pain although typically this is with lying down more than with sitting up. Because of effects on autonomic nerves, it is possible that you could have GI symptoms. You might consider taking an over-the-counter medicine like zantac (ranitidine) or pepcid. The second thing to think about is if you are worrying or trying to do too much and can you take a day off or do less for a day or two to see if that helps.
I hope you feel better soon and that this pressure dissolves to warmth and dissipates in peace.
WithHope for a cure of these diseases