Which BBT to use?

Bronwyn • 31, firefighter and peace officer, married 2 years but together 14. Our first baby!
Hey beautiful ladies,
​So this morning at 5am I woke up so I took my temp. Had bathroom break went back to be until 8am. Took temp then too.  Which temp would you use?  I fell asleep around 12:30am.  Temp at 5am was 36.31C, temp at 8am was 36.59C....
​Since I use multiple apps  I have 36.31 on most and plugged 36.59 in a couple. Lol. One makes it look like a dip the other like temps going high. I'm 7-8DPO. 
​Thank you!!