Im currently in the middle of tests to confirm IBS, but the threat of cancer is scaring me to death. I'm 25, have alternating "normal" and D, gas pains...especially when I hit the fiber and sugar. The question is, does anyone else start off a BM being fairly normal, then turns into D? Or maybe have back to back with one being fine and the other being D? Not passing any blood (that I can see...being tested for occult blood). And I feel like my gut is tense alot of the time....I feel stressed like a nervous wreck too? Any thoughts anyone?