Disregard first reading? BBT

Liz
So I woke up around 5 am and used the bathroom and went ahead & took by bbt. (yes I know you shouldn't get up before taking it but I forgot) the reading was 96.6 
I went to sleep and slept 4 hours, took it again and it was 97.0 my question is should I log the one I took after I moved & used the bathroom or use the one where I had been I asleep for four hours?

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