I would suggest getting an Upper GI done (tells so much) or seeing a Chiropractor (amazing how much your spine/nerves/back affect your WHOLE body)....have suffered for yrs. w/ acid reflux, (that pain you describe under your chest) gastritas, erosive esophagitas, duedomitas, hiatle hernia, stomach erosion, pain in back & sides, ect....but got help w/ some and diagnosis's w/ Upper GI...and now going to a Chiropractor--it does wonders...hope you find help soon...Good Luck & you're in my prayers....*Take care, God Bless, & always...Keep Smilen!!*

Lissa