Antibiotic Xifaxan

I recently increased to 2 grams of Pentasa per day from 1 gram.  I also take 9 mg of Entocort EC.  I rotate every three months on the Entocort - three months on, three months off.  My gastro has decided he wants to keep me on it long term to try to keep me off Remicade as long as possible (he says I will eventually have to go on it, but he'd like to wait until the last possible moment so hopefully it will work as long as possible).  Because of the increased medication, he also put me on Xifaxan, and antibiotic used for traveler's diarrhea.  The idea is to help kill excess bateria in my gut that is causing severe gas, especially at night.  I've been on it a little more than a week, and have developed thrush.  I was taking a probiotic, but ran out.  I've ordered more, and will resume Xifaxan when I receive it.  I am already on so much medication (I have cancer in addition to Crohn's), I am beginning to wonder if it is worth it.  Has anyone else taken Xifaxan long term?

Thanks,

Gail