No bm in 8 days. Take daily probiotics, stool softeners, & miralax (polyethylene glycol). Stomach looks large and in some pain. What should I do? Have appt w GI dr this wk.

GI good idea. It sounds like you are doing all the things that you should on your part. You may could ask your gi, if apt not until later in week, if they would be ok with you trying a fleet enema, (sodium bisphosphate) but with colitis (depending on the type), you really should have that discussion with your GI doc....Sooner than later.