Pregnancy Insomnia

Is this a thing?? I sleep maybe 4hrs a night. I have no problem falling asleep. If I’m lucky to get my 3yo in bed by 8 or 9 I’m knocked out right beside him. I’m exhausted all the time, but I can’t sleep! I wake up 2-3 times throughout the night. Not to go to the bathroom or anything, I just be up staring at the ceiling trying to go back to sleep. After not sleeping all night I have to work 8hrs and then go home cook dinner, clean a little and get myself and my son ready for bed. My husband is insensitive to what’s going on and he’ll wake me up through out the night also to try to have sex and gets upset when I turn him down. I just want to sleep!! 😩😩