Can thrush on tongue cause nauseous feeling in throat when eating. Also feels like something in back of tongue all the time. Is coated yellow, white.

Antifungal rinse. Thrush on the tongue, besides altering your breath, can alter the taste of food. The main reason is that the tongue has taste buds and these can be altered with thrush.

You should see your dentist to prescribe and anti-fungal mouth rinse that you can swish and gargle with. That should quiet down the thrush and you should regain normal tasting.