Hello mommies, can you please tell me who has experienced something li…

Hello mommies, can you please tell me who has experienced something like this? ? I wrote before that we were treating bronchitis with antibiotics, our doctors prescribed ?‍♀️ After your advice, I removed all their treatment, bought a nebulizer and did inhalation, Thank God, we haven't been sick for three days now, but here it appeared in the morning, I think it's stomatitis on the background of antibiotics? Is it right? How to treat it? It's not possible to go back to our doctors, we have everything treated with antibiotics, and meanwhile, I can't go to the city because of the cold, frost, I'm afraid. Please advise how to be, what to treat? We are