sleep deprived...

and I don't know why? I'm not a night owl at all infact I rarely stay up past 10 pm. For the past three nights I've been falling asleep at about 4 or 5 in the morning. This morning I just got into a light sleep when my little sister woke up about 5:30 and gets my dog all excited. yay for my sister! So over the past 3 days I've slept about 9 hours. and I'm not even tired now. My mom said if I don't fall asleep by midnight she'll give me something to knock me out. Hey if it works it works. I'll try anything