Waking up at night and then can’t fall asleep!

Hi all! Since getting pregnant I’ve been sleeping quite badly. It’s definitely a pregnancy symptom for me. I wake up in the middle of the night (3 or 4 am) to go to the bathroom, then it takes me hours to fall back asleep. Sometimes I don’t fall asleep at all. The fact that my husband is an early riser doesn’t help either as he wakes up early even on holidays / weekends! We have a spare room but even if he sleeps there I wake up if I hear noise 🙁

Does this happen to anyone else? What works for you to fall asleep again?