Every so often I'll have a movement come out a greyish white/yellow. It's not quite white, its like... like when you mix mashed potatoes with gravy color. Just pale. Its not quite yellow either. They aren't fatty, sticky, bulky- they don't float. But clearly miscolored. I'm not in any pain, no jaundice that I can see. I have bouts of what feel like IBS where I have cramping and have to go to the bathroom immediately. I'm also taking famotidine for heartburn. Any insight would be great.