hi...when my tongue looked like yours sounds, i went to the dr. and actually had a yeast infection (also called thrush) the strange part is i think they gave me flagyl to help it...did you have it then or just with the second antibiotic? i do know that muliple rounds of antibiotics tend to kill good bacteria as well as bad bacteria in your body, allowing the overgrowth of yeast, so it does make sense.hope this helps...kel