Thanks for coming to HCM. As you mentioned that you went through several tests & was not positive for worms, it is very less likely you have worms. Also, there are no such big worms (unless exceptional un-attended cases) that can be felt as moving from outside of abdominal wall.
I am assuming that you underwent gastro-intestinal scopy which was normal, which rules out any mechanical problem of intestinal loops, normal ultrasound
abdomen rules out any lumps/growth in abdomen, or partial obstruction. You have not indicated your built/age/gender/general health; people with thin abdominal wall, normal movements happening in intestines to push food forward (peristalsis
) can be felt.
Coming to your concern on fecal matter being rope-like, the shape in which fecal matter is seen as coming out depends on the shape of tightest/narrowest anal opening and the condition of lumen/cavity before that; since you have severe rectal prolapse
, that might be the cause. As I mentioned initially, if you are tested negative for worms/ova/eggs of intestinal parasites from a good lab, it is unlikely that you have worms. If the tests that I mentioned here are done and are normal/negative, you don't need further testing. Just follow up with your doctor for rectal prolapse management.
Wish you good health.