Temping question! Please help!

Tierra • TTC since September 2013, diagnosed with PCOS, on clomid.
I usually take my temp between 0330-0400 every morning. Today I woke up from a dream at 0240 and decided to take my temp then. It was 97.9. I went straight back to sleep (did not get up, sit up, change positions, ect) and when I woke back up at 0300 it was 98.2. Which temp should I log? Which one is the most accurate?