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