Raising the temperature that high for 8 days will stress your frog out, and it will need extra special care in recovery, but it wont kill it. Just make sure the tank doesnt dry out at all. Keep the humidity high
Chytrid on the other hand, will definately kill your frog.

I would say just go to a vet. If not, then you have to risk taking a **** shoot and your frog dies anyway, or you get lucky and he gets better.