Help please!! 😩😰😴

I'm 22 weeks and for the last week or so I haven't been able to sleep very well. No matter where or how I lay nothing seems to help. I'm so exhausted. I have never had this problem while pregnant. I can't try to nap during the day as I have a 4 year old and a 3 year old. I have an appointment this week, I'm just curious if any of you mommies have experienced this? What did you do to help you sleep?