<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been having severe abdominal pain and bloody diarrhea for the past few weeks. Im really worried, can you tell me whats wrong with me?  <response>: Based on your symptoms, it sounds like you may have ulcerative colitis. I will prescribe Mesalamine Asacol, which is an anti-inflammatory medication that can help reduce inflammation in your colon and relieve your symptoms. 