Sorry you're dealing with what is a miserable situation. I am just coming through something similar including a bad ER visit and posted about it under another thread. After the acute episode during which I was more or less fully obstructed at around the stoma scar site, where I do have some stricture, I went 4 days on clear liquids without passing stool. My local GI returned from vacation and suggested Miralax, which he called " the gentlest laxative known to man." It did the trick.
I agree with Scott about getting in to see Dr. Shen.