math sucks

It is currently 4:06 a.m and i have to be up in about four hours. I've laid in bed for what seems like an eternity fighting this incessant desire to work out pointless math problems in my head. This sounds really stupid right? Well...it IS! and it is driving me nuts! There are no answers to these problems and they go on endlessly! I have no idea how to turn off my brain when this happens. The first time it happened I thought, "weird". The 2nd and 3rd time I thought "ok, this is getting really annoying". Now I lay down at night and half expect it. I've gotten into the bad habit of taking Advil PM every night before I go to bed. This actually helped but I don't want to have to depend on something for my sleep. After a month of sleeping alone Paul finally returned home. I thought this may help with whatever latent anxiety was causing me to do math problems in my sleep and it did. However, I have lost my boyfriend to a more attractive date tonight, Ben and Zack ;), and I find myself in a most familiar situation. I'm not quite sure what to do. So many days I wake up exhausted, feeling like I haven't slept at all. Anyways, I've read for an hour and writing now hoping it will help.