my husband sometimes has free bowel movements and sometimes is constipated but lately very seldom has a GOOD bowel movement. He says he constantly feels the urge to go "poop" He says it is almost like having a corn cob stuck up his butt. He does not have stomach pain, but just the constant feeling of having to "poop" Like I said it is never a whole lot and sometimes it is soft stool and sometimes it is hard. What's going on? Can anybody advise?