It is startling to me how well my body temperature reflects the progress of a cold. Kinda handy, however. My latest cold started on April 1 with a temp of 98.4 which is barely over normal. Two days later my cold was terrible and my temp was 99.2. My cold slowly got better until April 13 when my temp was near normal at 97.8. ( See the chart.)
I believe that my temp is a better cold indicator than how I feel. As long as I have any temp I rest more (10 to 12 hours in bed.) and drink more fluids.