39 is actually classed as a high temp. 37.5 is a mild temp for children. Not to scare you or anything but when my daughter was younger she actually ended up hitting 41 degrees (temp spiked quite quickly) and she started having a febrile convulsion. It was quite frightening but I took all her clothing off while she shook and called an ambulance. Luckily a cool damp cloth helped cool her down but the frothing at the mouth scared me so much I don't ever hesitate to see a dr when it comes to kids and fevers.

You can use nurofen and panadol about 3-4 hours apart which seems to help so much more than panadol. I hope your little one feels well soon.