I had the same between weeks 6-10. But it went away after I started on Obimin (not sure if it was a coincidence). Check with your gynae.
please check with your obgyn!! there are some drowsy antihistamine options that are safe..or melatonin.:)
Mum, the below article might help you. https://sg.theasianparent.com/pregnancy-insomnia
I spray some lavender scented (check ingredients) room and pillow spray on my bed.