body temperature while water fasting

Hello,

I am new to these forums, so hello =)
I am on day two of a ten day water only fast, and I have been taking my temperature at various times of the day. I wonder what the general opinion is on what is an unsafe temp? Mine is way low...never exceeding 96...I am hypothyroid and rarely get over 98 anyway...usually around 97.5. Any feedback on this would be awesome.
In addition to fasting, I am taking a short walk (about a half mile) and resting often.

Thanks,
kozzz