Very sorry to hear what you went through. Just a couple of thoughts:- yes you could have a stricture, caused either by scar tissue or inflammation or a combination of both. Then the only thing that manages to get out is the liquid and you are still constipated/obstructed. I have had this, and I have also had a major problem after eating rhubarb, I think it is too fibrous to get through my stricture. And because the gap gets narrower when there is inflammation on top of the stricture, it means some foods can cause problems which have previously been fine. I wish you all the best.