I am not sure about this so maybe someone can kind of corroborate this. It could be that the colonic took a lot off of your intestinal walls. I think heard someone somewhere in here say something about having blood in their stools after being almost all cleaned out. Maybe adding healthy intestinal flora would help? I've just heard that sometimes your intestinal walls get irritated, too, because it is used to having all that junk on it, and it needs time to heal. colonics are harsh, I think, too, since it does a lot at one time, unlike the PB shakes that are slower. Your digestion track gets all out of whack after doing something like that. It might take a bit of time. Just some thoughts after reading through the forums for a few years.