Canker Sores In Toddlers My 27 Month Old Toddler Has A Canker Sore...?

My 27 month old toddler has a canker sore...? - canker sores in toddlers

Hes had at least a few days. There seems to be disturbed and also the chancre is healthy, but I'll take it to the doctors anyway? Or, there are home remedies I should try?