i'm a 43 yr old woman. i have always had more stomach ailments then anything else, since i was a kid, and very sensitive stomach. i'm a vegetarian also. recently (for past week and a half approximately) i have been having issues after eating meals. lots of stomach rumbling, a little more gas then usual, very hard and irregular shaped stool that also includes much looser stools as well at same time....sometimes starts out with the hard and ends with loose. appetitite hasn't been the greatest, and usually not long after eating i start getting lower stomach pain and then need to use the bathroom. haven't really lost any weight, maybe a pound or two at best. i do have gallstones that were diagnosed while pregnant with my youngest daughter, who is now 13. could they sometimes affect my digestive system?? oh, and the stool range in color from brown/dark brown to yellowish....and include quite a bit of undigested food.