I have Ulcerative Colitis (which caused my b12 and nerve damage etc but whatever blah blah) and any abnormal persisting bowel issues need to be checked.

I don't have MS and just stopped by to read but I do have intestinal damage from UC and am very familiar with loose bowels either intermittent or persistant. Since UC has no cure I still deal with it but the point is if this persists get it checked.

Just because you have MS doesn't mean you cannot develop another disease like I have or something else. be wary and pay attention to your bowels they tell you lots.