What Causes Chronic Diarrhea Having Hyperbilirinemia?

Hi, over five years now I have suffered from chronic diarrhea. Also, when I don t have diarrhea my stool is hard and shaped like pellets. After 2 years I noticed I was lactose because my body wouldn t digest anything diary anymore. I ve been in and out of the doctors too many times and they constantly have me take blood tests. I have to keep switching doctors because I have personal problems with my insurance. All of my blood results and stool samples are normal except I have hyperbilirinemia. I constantly feel fatigue, nausea, excruciating stomach pains, side pains, sore legs, chest pains, heart burn, bloated stomach, difficulty swallowing, weight loss, and a major loss of appetite. What do you think is wrong with me? I want a better understanding of what I might have this way I will know exactly what I should be tested for when I go to the doctors. Money is a huge issue for me right now. Thanks you for reading.