My 5 year old daughter fell off the second step of a stool and complained of pain in her side. She was shaking a bit. She stopped complaining of pain and then wanted to play. She went out to play but there was a bit of a chill. She just got her fingers slammed in a door(talk about a bad day) and fell asleep when I was trying to ice her hand. She now seems to have a fever. I gave her Tylenol and water as she said she was thirsty. Is this fever just a bad coincidence??