The elusive "good night's sleep"

So, between waking up to go to the bathroom and my recent struggle with allergies, I can't seem to catch more than a few hours of sleep at one time. I broke down and took some allergy medicine today (after calling my doctor AND my Dad, of course), which, unfortunately, gave me a sore throat. I thought a cup of hot tea might help, so I had one before dinner tonight. I failed to remember that my body is no longer used to having ANY caffiene, and here I am awake at one am. . . If anyone has any brilliant ideas about helping me sleep, I'm up for suggestions :)