Okay so yesterday, I started checking my basal temp after I fed my younger brother and I'm not sure how this works, but I put the thermometer in my vagina and so I waited, it was at 99.2 F and I checked it again today when I woke up, I went to get it and put it in again and it went down to 98.1 and checked it before eating and it was 99.2 again. Is this normal? I need some advices thank you!