Super low temp - which should I use?

Hi ladies! I have a quick question! This is our second cycle really trying and my first attempt at temping. I've been temping vaginally as I read less factors affecting the temp. I'm on CD 13 of a 26-27 day cycle. If I'm O'ing, it should be soon since my ewcm usually goes away on CD 14.

I haven't been the greatest at temping at the same time because I often wake up once or twice in the middle of the night, but I have been temping after at least 3 hours of sleep. My normal official wake up time is around 7 am. My normal temps have been 97.xx with a couple odd 98.xx. I know that my temps won't be super accurate because I don't take them at the same time, but I wanted to at least get the hang of doing it every day.

This morning I woke up randomly at 5 (after going to bed around 11), took my temp and it was 96.46, which I thought was odd. I then went back to sleep until 7:30, and decided to take my temp again, and it was 97.38, much more normal for me. So now I'm unsure as to which temp to use! Any thoughts?