Are you measuring temps with a digital thermometer? You could also pick up an infrared temp gun at the pet store to carefully monitor the hotspot until your thermostat arrives. Another thing I would recommend would be to unplug your UTH until you get your thermostat, and use a heat lamp to provide warmth if necessary. They can go a few days without a hotspot as long as they don't have a meal in their tummies, so keep your ambients up and follow the advice above. We all make mistakes, so don't worry too much, your baby has already forgiven you

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