My daughter age 3 got hit by a door knob on the side of her head knocked back about a foot . Shortly after she develops a fever lasted 3 days. For 3 dats she would wake up crying complaining her head hurt I have Tylenol but no luck still complains took her to the ER. They checked for uti strep throat all no she also had swollen taste buds which I had previously took her to the dr for but they told me it was ok. In the er the doctor said the swollen taste buds are a result if something she also had a swollen throat. He said she may have a viral infection prescribed iborophin and Tylenol. At the hospital the have her Tylenol n Motrin it killed her fever. After we got home I gave her the meds 2 days passed she developed this horrible cough and started throwing up. They insisted it was not a head injury but my daughter has plv from being premature so I wanted to make sure... What do you think could be wrong she still coughing breathing hard gagging throwing up but no fever... I thought it could be a head injury since she was fine before she hit her head