S.D.
I would suggest switching doctors. If your child has had a fever for 5 days, that is a sign of infection. Being that it has been so long, most pediatricians would have prescribed an antibiotic.
If the temp. is not 101 or higher, may I suggest that you not panick. Try to go a whole day w/o giving him any motrin. He should be okay. I would suggest taking your baby in when he has a temp.