why does gastritis make me belch and back pain

i had my gallbladder out a month ago.  I thought it would help my belching and back pain, but it has made it worse.  I only eat low fat and organic and carrot juicing.  Is it now because I don't have that extra squirt coming from the gallbladder to digest food.  Even if i don't eat fatty foods i still belch like  crazy, and my back starts hurting.  I do have gastritis, does the inflamed stomach produce more gas when  I eat or exercise?   Even when I start walking I start belching like crazy and my rib cage and back starts pounding with sore pain like it is having fullness and bloating.  

thanks for any answers.

sharon luanne

[armyblue]

probably not related but tht I would pass on.  My Dad's constant belching, even drinking water, came as a result of a migrating hernia.  Also..bing.com,  type in gastritis.  I have Atropic Gastritis, not HP.  Found it helpful.  Good luck, Atmyblue