BBT Question

[ArchiesMamaBird]

I normally take my BBT when I wake at 6:30am. This morning I woke at 3:30am (didn't know what time it was at first) and grabbed my thermometer and it said 97.3 degrees. (It's worth saying that I was on top of the covers, feeling chilly and that's why I woke I think.) When I realised what time it was I went back to sleep and didn't think about it.

Then when I woke at 6:30am (wrapped up warm and toasty) I checked again and it was 98 degrees.

Which temperature should I use for charting? I'm 11dpo if that makes any difference.

Thank you in advance

I'd personally use the second one but Mark it as questionable.

And you should be using a two decimal place thermometer - is that what you have?

Use the second temperature. But if you've had interrupted sleep, your temp might be a bit higher than usual.