Pregnancy Insomnia

Or rather, the inability to stay asleep for more than a couple hours. I am 18w5d and struggling with a severe lack of good sleep. I can fall asleep in the first place without any difficulty but once I get up to pee a couple hours later, I can't ever seem to get back to where I was. The result is a grumpy, hormonal, emotional mess of a woman who can barely even muster up the energy to do dishes. The frustration is very real! So, what do YOU do when you can't sleep?