I don’t know if it’s the same thing, but I feel like my insides (particularly in my upper abdomen) are shaking or vibrating on occasion. Occasionally I have had a fluttery feeling in my chest if I’ve dozed in the recliner but seems to be related to the pressure that puts on my abdomen. This all seems to happen when I’m full of gas. This is my primary complaint. I started out with hPylori a couple years ago and had a lot of complications following the massive antibiotics used to kill it. I’ve made a lot of progress but still deal with a lot of gas. It seems to be better if I take Prevacid and Zantac for a couple weeks then switch to IB Guard. Sometimes Gas-X just isn’t enough for the gas and I take charcoal caps bought over the counter. That helps the most. But the shaking or vibrating always seems to be tied to gas for me. It’s almost felt like my heart was fluttering but my pulse was normal. I had a heart monitor once but the fluttery times don’t coincide with anything on the monitor. I had this once when I was a lot younger and had candida yeast problem and it went away after that was treated. I also had excess gas with that. So for me it sure seems to be tied to gas.