So for the past week and a half, I have been using a thermometer that temps my skin. On the skin temp it said I was 97.8 on my forehead. It was kinda cold in my room and so I checked behind my ear and it said 98.8. I decided to get up out of bed after a few minutes to get the regular thermometer and it said 98.1. Which reading should I go with? The temp before I got out of bed or the one a few minutes after?