BBT during sleep higher than waking temps??

Catherine • TTC #1 @37 via IUI/IVF

Baffled... my temps just after waking, and intermittently throughout the night, are pretty constant, but consistently HIGHER than my temps during the day! Is this unusual for temps to drop after waking? Am I an alien? This has been my first cycle charting. I was able to see a pattern consistent with ovulation. Side note: taking progesterone suppositories before bed.