I'm so confused! I normally wake up every morning at 6am and temp. But, this morning, I woke up at…

I'm so confused! I normally wake up every morning at 6am and temp. But, this morning, I woke up at 4:45 for some reason so I decided to go ahead and check… 97.56. when I tested again when I woke back up at 6am it took at 97.74. I never got out of bed for either, just rolled over. which temp do I chart?