Gallbladder Removed - Severe Cramps And Constipation

I am a 55 y/o male, in 2007 I was diagnosed as having a gallbladder problem and the specialist / surgeon recommended I have it removed . She administered a test that involved a drug being introduced intravenously while in what I think was an MRI tube. I remember having stomach discomfort (dull pain) as soon as the drug was introduced. The attending at the time of test explained the discomfort was expected and was a confirmation of sorts, that that I did indeed have a problem with my gall bladder. A few days later the surgeon removed my gall bladder and I was sent home later that day.

Five days later I returned to work, and I seemed to be on the road to recovery. I existed on raw fruits and grains and such,as instructed and was given a list of foods to stay away from.(Fatty foods, dairy , etc.) This is really where my story begins. The surgeon/specialist never warned me of the potential problems that I might encounter if I elected to allow the procedure, now I can't eat anything that doesn't cause discomfort. I don't, nor have I ever had, chronic heartburn, before or after the removal, but have constant problems with severe cramps, constipation, I have to take a fiber supplement every day lest I have excruciating pain passing stool. Of late I have developed a nagging dull pain that is constant just inside of my bottom most rib on the right rear mid abdomen.I have no fever, and no urinary discomfort or bleeding, I occasion have red blood in my stool.

My general practitioner has put my on OTC Zegerid 40 mg 2 tid, after being on this for months I can't tell much of a difference. However this pain in my rib is of major concern as I can't sleep. Can the Zegerid cause this pain in my side ? I am currently unemployed and cannot pay for medical care and I am currently uninsured.