i just read that if you leave it untreated it can spread to other parts of your body. You should see a doc ASAP!!!

Thrush is a yeast infection in the oral cavity. White patches can be seen on the inside of the cheeks and gums. This is common with babies and toddlers who put things in their mouths. An individual who is immunocompromised may have thrush that spreads down the throat and into the GI system. Thrush is easily treated with a nystatin oral medication. You need to see a doctor for this as it is by prescription only. Treating sooner than later is wise.