Chronic stomach pain, diahrea

For over a month now I have been in chronic pain my stomach always hurts no matter what I do the pain doesn't go away but always gets worse after I eat. I also now get diahrea all the time which comes with vicious stomach cramps that seem to last all day. Things are not good here because I can barely sleep because of the pain and doctors don't prescribe me medicine for the pain and I don't know what else to do. I can't eat because the pain gets so bad that I am on the floor crying and then when the diahrea comes I generally screaming on the toilet. Any advice for how to lessen the pain would be greatly appreciated. Or any advice at all really as I am starting to get depressed because I don't know what to do anymore