Any old remote infrared temp sensor from the garage or shop will do. Some will read from a meter away. I’ve learned my usual forehead temp is about 89°F in 70° surroundings.
I run usually 97.8 F on average. Lot hotter. Oh. You are not compensating. Forehead is colder than throat. Butt is warmer than Throat. Let me see the instructions. Add 0.5 to 1.0 Degree F to forehead temp to get throat temp. You are not that cold.