Sunday, (Dec. 30) my 3 year old son woke up from his nap burning up.He also developed a croup like cough, which has since changed to a regular cough. His temp was 103.6. I gave him tylenol right away. I continued to monitor his temp just about every hour. It would go down no lower then 100.8 with the tylenol, and after 3-4 hours would be right back up over 103. He didn't want to eat much, he was drinking plenty... also complaining of headaches. Yesterday, which was day 3, his fever was down on it's own to 100.9. So I figured he was getting better. Then this morning he gets up, it's day 4.. and he's still running a low fever of 99.8, and is now complaining of light sensitivity. He still has a cough.. what do you think it could be? My doctor has always told me not to worry unless the fever is 105 or higher.. but what do you guys think?