How are you checking your temps? What kind of environment is he or she in (bedroom , living room, etc.) Any info on the care will be helpful, there is a sticky note how to set up a hatchling and it works wonders. As for refreeze rats, would you refreeze chicken? I say play on the safe side better to toss it than be frugal and your poor noodle gets sick. Best wishes to you always I am sure someone will come along with great advice they always do, remember they are trying to help and only want what's best for your noodle.