Teething doesn’t cause a fever. My lg was similar last week and she’s got 4 molars coming through. I took her to the walk centre because of the temp and it was an ear infection too.
Ambesol from chemist over counter put onto dummy to chew down on has been perfect life saver with teething for us (if it is teething) x
@Anna because he's putting everything in his mouth and the front teeth have cut through
Maybe it's teething and something else.. as @Emma said teething doesn't cause fever..
how do you know it's teething? not sure about it but 39 seems high.. maybe get him checked by a doctor..