Yeah its definitely in the large intestine, the ascending to be exact...It starts right when I start digesting food so thats how I know. Usually the small intestines have no problem moving these through because they dont have all the strictures in them as the large does and have a reputation of getting stuck in the ascending from my past experience and from others. I've yet to hear from someone getting something stuck in the small intestines as they usually just pass right through. If it was the small intestine the set of issues would be different I suppose. Everything i've gathered from this has came from Andreas he was well versed in this topic.