Appetite Loss mixed in with Diarrhea

Hello!! For the past two years I have had severe diarrhea...so bad that I don't remember the last time I have had a "normal," "harder," stool. As of late, I have also started losing my appetite. I went from eating breakfast, lunch, and dinner and snacks in between, to eating a bagel w cream cheese at 11am and an extremely small portion of dinner. And that's if I even finish that small portion. I haven't been tired or anything, but have defintely been feeling extremely anxious. My stomach feels like it's constantly churning. I went to the doctor about a year ago for this same problem and he kind of just said it's normal to go through these stages. The big problem is that it's a year later and my bowel movements have become very painful, and along w my stool comes blood. Please advise as to what this could be.

Thank You!!