For the last 3 weeks my toungue has had an orange coating. I was on antibiotics at least 4 weeks prior so about a week after the treatment my toungue turned orange, i have also been under stress. I am more thorough about brushing it which has lessened the orange hue, yet it still worries me. No other symptom has occured with this... oh except te same week i realised it was orange I had a cankur sore on my top gum that lasted about a week.