is anyone else having trouble sleeping?

Hey ladies, I'm nearly 24 weeks pregnant and for about 3 weeks now I can't seem to sleep! In my first trimester I was passed out by 8pm and now I can't sleep at all. Lay there at night for hours getting angry I can't sleep and then only doze for about 30mins and wake up and do it all night! It's driving me mad! I have two other kids which from time time keep me awake, along with my very annoying snoring husband but can't seem to sleep.