Question

Am

I am thinking about trying to track my bbt but I don't know if my work schedule will make it inaccurate. I work mostly nights I do six nights on and 8 days off so when I go to bed and wake up are different. I also work extra days sometimes on my 8 days off and those are primarily day shifts. If I just record my bbt when I wake up is that ok or will the different times of day effect it?