Charting question: when to temp?

[aeiou]

Hey, everyone! I'm interested in charting to avoid pregnancy, but I'm not sure when to take my temperature to get an accurate chart. 

My DD still nurses throughout the night, so I sometimes get up at irregular times through the night which confuses me as to when I should chart. Another thing confusing me is that I wake up when DH gets up for work, go back to sleep and get up a few hours later when DD wakes up. 

Here's a vague timeline of when I sleep/wake up:

10-11: bedtime

11-12: fall asleep

4-5: sometimes I'll wake up when DD needs to switch sides

530: DH wakes up for work (usually I wake up here if I'm not awake from DD earlier

6ish: fall back asleep (it takes me a while to fall back asleep)

830-9: DD switches sides nursing again and I wake up again (sometimes drift back to sleep as she nurses, but not for a substantial amount of time)

I'm thinking that I should just temp when I first wake up, even if it's as early as 4, because I would have been sleeping for at least 4 hours before then and the difference between 4 and 530 would be minimal, but maybe there's something about it that I'm not seeing. 

Thanks for your help : )

[JMJ]

If you're cosleeping, a slight waking to switch sides is very unlikely to affect your temperature.  Taking it at different times is much more likely to affect it, so I would go with whatever time is most consistent, probably when your DH gets up for work.

[aeiou]

Thanks for the quick reply. That's what I was thinking, but then I was wondering if I should take it if I wake up earlier. Some days I'll fully wake up 30 minutes to an hour before DH wakes up, not just a half wake up to switch sides. Should I temp then or just wait so I'm temping at the same time every day? (I'm staying in bed, pretending to sleep so DD doesn't wake up, if that makes a difference.)

[dejagerw]

If you wake up 30 min earlier, just temp then. 30 min never made a big deal for me.

[aeiou]

Sweet. Thanks so much for your help. :)