Hey moms... I called the dr, but I'm looking for more mom advice. Logan started an antibiotic Monday, and by wed he had really bad diarrhea. Today he has such bad diaper rash. He's so red and almost blistered in one area. The doc told me to get a probiotic. Any recommendations? He also said to give him lots if bananas. I've also been putting bacitracin on his bottom. Any other suggestions? He's so miserabl. He screams everyone he gets changed.