What Causes Continuous Stomach And Abdomen Pain?

hello dr. I'm mother of 7 yrs old & 4 month old (both boys).i have this heavy feeling of pain in my full stomach as well as in lower abdomen from last 3 months. my menstural cycle hasn't started yet. my doc has done tests as well as ultrasound which diagnose the gallblader stones.But dr said this is not gall stones pain.I'm really fed up of this 24 hour pain.unable to understand what to do.I'm not getting any relief for this pain dont know what hes looking for and i want to know what to expect for possible diagnosis .whatever i eat i feel pain.i have already discarded most of the