What Do Pain In The Upper Abdomen On The Left Side Indicate?

I have had some ongoing stomach and bowel discomfort since November but its getting worse for the last month now. I have stomach pain in upper left side with bloating and constant dull ache that wont go away with antacids. bowels are somewhat inflamed. feels like my internal organs are swollen, bloating gets worse thruout the day. some minor back pain between shoulder blades. I was somewhat diagnosed with either lupus or fribromyalgia a year ago with two positive lupus markers but doctor didn t want to treat it at this time. I thought that I might just be having a flare up or IBS which I have had in the past but even though I have cut out all Milk products and caffeine and am on a bland diet, my symptoms are not going away. I have an appointment set up with my GI doctor in a week but I was wondering what you may think is going on. My father and older brother have both recently had their gallbladders removed so I m wondering if that could be whats going on. What do you think?