I never had any fever.But yeah maybe we do.Have you lost weight at all?I'm down 18lbs in 4 months.I have a bad taste in my mouth too.So far xifaxan isnt helping... wth.Its usually pretty effective for most ppl so im really disappointed.If you or anyone else has any ideas to add more good bacterias or anythign let me know.I am taking florasmart 45 billion probiotics.