Does anyone else get very "hard" feeling gas bubbles in the chest?

I’ve already left a message with my doctor… he’s on vacation.

I seem to get maybe 1 or 2 a year, and it seems like they come when I’m really stressed out. It’s a very sharp pain, clearly a bubble, very sudden, right in the middle of my chest. It’s usually dislodged with a couple of sips of Pepsi or other carbonated drink, and then I go on about my day.

But for the past three days, I’ve gotten one a day. Which is very strange for me. So, since I’m waiting to see my doctor when he returns, in the meantime, has anyone else had this experience?

—(I should note that the only reason I’m seeing my doctor is the frequency of them in the past few days when I don’t feel all that stressed. I’m not worried, or scared… it’s a gas bubble and if I’m near someplace that sells soda, it’ll be gone in 10 minutes at the very max. I’m just curious.)