I woke up this morning at 5:00 to pee (sorry if TMI) and took my temp. At that time it was 97.62. When I woke up officially for the morning at 8:00 my temp was 98.51! Why the difference? Which one should I use? This makes a big difference on my chart right now (i think

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Thanks for your help
BTW...my normal tem time is 6:30-7:00.