Insomnia

Is it normal to have pregnancy insomnia this early? I'm 8 weeks and for the past two weeks it's been getting worse everyday. I finally took some unisom the other night but one pill knocks me out and makes me feel like I have to get 10 hrs of sleep. So I pretty much can't take it when I know I have to be up and productive the next morning. Which is frustrating because that's about 6/7 days of the week lol.