Girls, is it thrush or stomatitis? I called the local doctor today bec…

Girls, is it thrush or stomatitis? I called the local doctor today because the child's temperature was 38.4-6. She came, examined him and said stomatitis. I have been treating him with soda solution all this time. Is stomatitis like that? And does it happen so throughout the mucous membrane? These points are on his whole tongue, on the inner side of his lips. She said the fever was due to stomatitis. I am attaching photos of the prescription, is stomatitis like this?