Pregsomnia

I don't know if that's a real disorder, or even a real word, but I have it. This second trimester has been great, really great, for the most part. I'm not gaining too much weight, I have a cute, noticeable belly, my skin has cleared up, I'm not terribly emotional, and I just feel good overall. Except one thing- I can't sleep. Ever. I fall asleep around 10:00 at night, and sometime between 2:30 and 4:30, I wake up, sometimes for the day! I have been able to read so many blogs, take so many quiet baths, and I even went grocery shopping at 6:30 this morning. Clearly, I'm putting my time to good use. But I suffer the next day, sometimes two days later. I am a walking zombie. I want to just put my kids in front of the TV and take a nap some nights. I have tried everything short of drugs to help. I put lavender essential oils on my wrists, I take warm baths, I even listen to my hypnobabies CDs- nothing works! I should contact a pharmaceutical company to give them the idea for making a pill for pregnant women who can't sleep.
I can see the ad now- a much cuter than me pregnant woman with disheveled hair tossing around in her unkempt bed, then finally sitting up, the next day she's chugging coffee (decaf, of course) just trying to get through the day- the voiceover "Are you pregnant and have trouble sleeping? You may suffer from Pregsomnia. With this new drug, Pregarest, you will be able to sleep through the night until your baby is the one keeping you up." And of course the woman is now sleeping peacefully on satin sheets and looks positively fabulous the next day. TV guy continues, "side effects may include headaches, dizziness, drowsiness, heartburn, blurred vision, ear bleeding, and allergies. Talk to your doctor about Pregarest."
I really don't know what else to do. If you have any tips, please share them! I need my sleep.