text: I have a 6 year old so I know where you are coming from.  \n\nFirst i as long as your child is not allergic, give doses of motrin and tylenol.  you can give tylenol @ every 6 hours and the same with motrin.  But you can give Tylenol and 3 hours later give motrin 3 hrs later give tylenol.  I have had to do this with my son.  If this doesn't work in 24 hrs.  Call your Dr. or take the child to the ER.  there might be something else wrong.