Keep on the tylenol, no more than required and see if it goes down. If it dont go down pretty soon, I myself would take the dreaded trip to the er. I know that it is such a pain.
It is like a new born now as far as things like that go---i would think. Maybe you should try and call the .Dr just to make sure.
Its not a little helpless fetus that cannot regulate its own temp by now---right?? The reason it is bad early on is because they have no way of regulating their own temperature, (they have no fat for insulation either--early on)but I would think by 8 months it would--
good luck. Do you know why you are running a temp? Temp usually means infection--and infections might be bad for the baby though.