Can anyone else NOT SLEEP!?

I remember pregnancy insomnia with my first born, but it was closer to the end. I would wake up and pace the floor for hours unable to sleep. But at 18.5 weeks, I wake up around 1am (usually to use the bathroom) and here is it 3:30 and I am still wideeeee awake. I just lay here and get frustrated! I go to bed between 9-10pm every evening and fall asleep relatively easily, but I CANNOT stay asleep..anyone else having sleeping issues?