Sounds like you have what I have. Don't go straight for the cancer therory. It sounds like Ulcerative Colitis. When mine started showing symptoms I just got back from Iraq and I was having pure bloody stools about 10+ times a day. All those other symptoms are normal too. And Ulcerative Colitis is caused normally by a recent change in your surrounding that may have changed the way your stomach functions properly, like breathing certain air toxins or eating foods your stomach isn't used to. It is an inflammation in the intestinal area that causes Ulcerative Colitis, and it will not go away but will slow down over time. You can have an operation done to remove it, but I heard it is a lot of pain and agony to have it removed.. If not treated carefully, it can turn to Cancer, so I suggest you getting it checked out. That is of course if it is UC. If not, then good luck, but it does sound exactly with what I have.