What Causes Intermittent Back Pain And Pain While Breathing Inspite Of Taking Prilosec?

I have pain in my right side into my back at times i am currenntly on prilosec it doeant take it away All the time. the pain comes and goes but is frequent And sometimes when i breathe a deep breath i get a stabbimg feeling of pain. It nausitates my stomach sometimes. My gallbladder has been removed and stones in duct work removed 5 yr.s after galbladder removal.