insomnia

i can't sleep. over the last 2 weeks, i've been getting maybe 5 hours of sleep each night. i don't know what's going on, but i wish it would stop!! at first, i thought it was because i was thinking a lot about my birthday. that came and went, still no sleep. then, i thought it was my upcoming grad school interview. again, that came and went and still no sleep!! i try to drink milk, warm milk, wine, tea, more wine; read, do crosswords, journal; watch tv for a little while, go online...i've tried it all! hopefully it will end soon. i can't go much longer looking like a zombie and yawning all day.