hello there autumnnist---I am seconding Moldie's advice----please, please getyourself onto a high potency acidophilus supplement right away!!!!--you are exhibitingclassic antibiotic related "flora wipe-out"symptoms,(flora being the "good" bacteria in our colon--WE need all we can get!) and Lord knows, it sounds like you really do need theantibiotic help with your secondary respiratory infections, but you sure don't need the IBS getting worse (or is that really possible
???)(this is where we can all laugh and relate, right??)--and once you start them, try to stay on them----I really believe that in all of thisIBS hell, that acidophilus is on of our true-blue friends. Let us know how you are doing, and make sure you get enough rest---your body needs all the rest it can to fight off the infection.