insomnia during pregnancy

I'm in my 1st trimester but I've been having insomnia every day and only get minimal amount of sleep every day compared to before I was pregnant. Anyone faced the same issue and what did you do? Its gonna affect my work performance and I am not planning to tell my boss till 2nd trimester. It's so tough. Past few days been listening to rain sounds to help me sleep but this particular night it is not working for me I've been trying to get in bed for 4 hours now tossing and turning and I have work in a few hours I'm so frustrated.