I woke up really early this morning because of some noise outside (maybe 4 or 5 AM) and took my temp out of curiosity. It was 97.10. I was also pretty cold. I fell back asleep and woke up at my normal time 6:30 and temped again. It was 97.97. The change was so drastic that I don't know which one to use. I used an online temp adjuster that gave me 97.43.

I'm so confused because AF is due tomorrow but I'm not getting any of my normal pre-AF symptoms. My boobs have felt tingly, like letdown, but that's it. I can't tell if I'm out or not. Thoughts? Any similar experience? Thoughts on the temp?