For The Last Week I Have Not Been Taking My

For the last week i have not been taking my miralax or metanmucil. Too much of that and I am i n the bathroom constantly with almost runny stools. I also haven diagnosed with IBS and epigastric problems. For the last 4 days I have had stools that have om out looking like sausages balls kind of between soft and hard so I have gone back to the metamucil and miralax. The problem is my bowels movements today seem like I have some string in them like I ate some string. About a week ago i had some asparagus. Could the string that I'm seeing is from the asparagus and is it ad to have sausage ball size bowels or is my sausage bowels related to the asparagus? At least i am having bowel movemnets