chest discomfort

Hi there,
Looking for some advice on my mom's health.  My mom gets severe pain in her chest, feels like it is going around to her back.  She has had heart tested and everything was fine.  She is told it is probably stress but wondering if it can be caused by esophagus or stomach issues.  She cannot take very much medication because most medication upsets her stomach.  Pain shows up as a sharp pain in her chest, she needs to take deep breaths as it feels very tight.  Anyone else have these types of problems and what else can cause it other than stress?
Thanks,

[ShawnP]

Sounds like she needs to see a GI doctor.  She could have a hiatal hernia or ulcers.   Since the pain radiates around to her back, her gallbladder might need to be checked as well.