Trouble sleeping

Is anyone else having a really hard time sleeping since getting pregnant? I'm so tired and all I want to do is sleep but my body just won't let me. I've tried exercising a lot during the day and taking hot showers before getting in bed. I wasn't a good sleeper before getting pregnant and now it's just unbearable. I'm trying to avoid any medication during my first trimester. Does anybody have any tips that might help?