My 24 month old daughter was prescribed Omnicef for adenoiditis b...

My 24 month old daughter was prescribed Omnicef for adenoiditis by her ENT. She is on day 6 of the drug and is experiencing a terrible pimple-like rash over her entire body, and her infection symptoms don't seem to be improving very quickly. She is also very agitated and fearful of things that she is not normally scared of. She has been extremely moody and clingy since taking this drug (not typical of her personality). She also has the maroon stools. I am calling the ENT tomorrow in hope that he will suggest an alternative to this drug, to which she is OBVIOUSLY having a reaction.