argh!!!

i am soooooo tired.  i can't seem to get to sleep anymore.  i got ot bed adn then am wide awake.  i've never had any problems w/caffeine keeping me awake (i used to have a shot of espresso at 11 at night and then go home to bed) so i'm not sure that's it.  i've had a headache since new year's eve (most likely sinus pressure) and i know that's not helping but it stinks all the same.  a few nights i took a benedryl sinus tab which, of course, knocked me out but, obviously, i can't depend on that to make me sleep.  hopefully sleep will come back soon.  :-(