Insomnia! Help!

Madison • beautiful Washington State! 2 Crazy boys with hopefully a third baby here soon! ❤️
Okay so I have NEVER had trouble sleeping at night and in the beginning of my pregnancy I couldn't stay awake past 9:00, j am now 20weeks and 6days and for the past week I CANT go to bed until like 1 or 2 In the morning, could I be developing insomnia as a second trimester symptom?? Any suggestions to help go to sleep!?