Hi My Name Is Natalie My Son Has Some Type

Hi my name is Natalie my son has some type of blister on his lip for the past few days. He hasn't eaten really. He screams a lot and cries cause he SAS it hurts. I have tried apple cider vinegar on his lips but he won't really let you put it on. I been using aquaphor ointment on his lips he has been taken Tylenol cause he has been having a little fever but also for pain he I taken amoxicillan for an ear infection