My 15 month old has a yellow/orange coloured tongue. His doctor says it is nothing to worry about and gave me no reason as to what causes this. He is otherwise healthy. A couple of months ago, I went on antibiotics for strep throat. After I finished the antibiotics, I noticed I also have a yellow/orange coloured tongue. I still breastfeed and we both take probiotics daily. I've tried googling it, but have come up empty. I would like to know if anyone has experienced something similar. Thank you.