Trouble Sleeping

Hi everyone. I'm 17 weeks and I am having the WORST time falling asleep at night. I've never been a great sleeper to start with, but it's just gotten worse progressively as I've been getting farther along. I think I'm averaging about three hours a night. I'm not in pain most of the time, mainly uncomfortable and even when I'm not I just can't get to sleep. Any tips you guys use?