On Many Subjects

It is normal for me to go to bed about 9:00 pm to 9:30 pm. Then, right on cue, I wake up at 2:14. So, I get up and pee because I am awake anyway. So, I go back to sleep and then, I wake up at 6:00 and I have to pee ALOT. My sleep is always in two segments, but I cannot understand why I have to pee so much when I wake up at 6:00 am. I do not drink anything during my 2:14 sleep break. The only thing I can figure is that I am sleep-driving to the Seven-Eleven, buying a six pack of beer and sleep-chugging all six before returning to the cozy warmth of my bed. Could explain why I wake up with a headache every morning, too.