Could be a heart attack
. Could be gas in your abdomen from the carbonation in the soda and eating too fast. That happens to me sometimes, especially when I am drinking cold
soda and eating a lot of bread. You might also be swallowing a lot of air when you eat. (Do you gulp or inhale a lot through your mouth before you take a big bite?) If you want to stop the pain, sip the soda and eat smaller bites.