My IBS changes from C to D periodically. Lately I've noticed that my first BM is normal and then mush during other visits to the throne. This causes nausea and my desire for food lately has diminished. I do not have pain but the dr. ordered Bentyl for frequent movements. Have you all heard of this. Also what do you all take for the nausea? This IBS is making me nervous--I do take Xanax for the anxiety. I also just got over the flu (bronchitis and strep throat)--does this make a big difference although the symptoms I stated above were way before the illness.