I'm wondering if you're having what I sometimes have. It affects my chest alot.....and makes me feel like my heart is having irregular beats, when it's not. And it makes me cough. I've referred to this sensation as feeling like I have a small animal living in my chest.
What I found helps me the most is taking Calcium every day. Sometimes, when it gets bad, I just have to back off eating much for a few days, and it seems to relax. Certain foods seem to really bother more during this time.......like cabbage, peppers, onions.
I think some of us have alot of gas in our transverse colons, and maybe even have slow digestion there. Maybe our poop even has trouble making those 2 90 degree turns at the beginning and end of our transverse colons. But.......many times I feel like the gas or whatever is pressing on my diaphragm and pushing up into my heart and lungs. I think that's when I get those heart feelings and the coughing. I actually do get irregular heartbeats at times during this weirdness.
I think some of us must have thin diaphragms, and alot of the GI activity gets transmitted up into our chests.
I seem to go through spells where I blow up like this, and my digestion slows down and I'm really uncomfortable. Like I said, the daily intake of Calcium helps me alot..........and during these times I just have to almost quit eating for a few days.