Thanks for your help. Yes, I feel like I am finally beginning to understand the pluperfect tense.
Groaning, I had woken up reluctantly to my wailing alarm clock. The sickening tune it emitted seemed somehow worse than a simple beeping. As the sun peered through my window, I had suddenly realised what day it was. I remember pulling the covers over my head as if to shield out the day's events, to prevent them from happening. But I had to face the music at some point.