My son was diagnosed with a double ear infection on Friday night and given Amoxicillin. I took him back to the doctor on Monday and the doctor said his ear infection is gone but he now has an inflammed, red, throat and a fever has shown up. I took him to the emergency room on Monday night and they said his ear infection is gone, his red throat is gone and he thinks it s teething. I have been giving him 1.25ml of infant Motrin every three hours. I felt like he was getting better, but this morning he has a 100.4 fever and is inconsolable. I am now also seeing three white spots on his tongue and his cheeks are swollen. What could it be?