BBT Question

Someone please answer.
I normally take my temperature at 6:30 AM before I get out of bed. This morning I woke up at 5:40 feeling really sick. I knew I wouldn't be able to stay in bed and go back to sleep until 6:30 so I took my temperature. At 5:40 it was 97.05 (the lowest temperature I've ever gotten). Ended up falling back asleep at 6:30ish. Woke up at 9:30 and took my temperature again. It was 98.55 (highest temperature I've ever gotten). Which temperature should I put in my chart?