Did you have an epidural? Epidural fevers can happen. Usually the same day but occasionally as late as a week after delivery. Call your doc/midwife.
Dont sound normal you should call your Dr right away!
You need to let them know immediately if you have any unexplained fevers (fever without a cold or known infection). Good luck!
How high is it? It's not normal to have a fever after delivery. You need to call your ob.