Could be worse. I am a career Classical musician, and for several months I had a problem doctors used to call Exploding Head Syndrome. Our property abuts and old cemetery, surrounded by iron fence. Every night at 3:15 am, I would be awakened by supposed vandals banging slowly in the fence 40 bpm, exactly 34 blows, like on an anvil. DH is a light sleeper - I would wake him, and he heard nothing. I was thinking I was losing my mind! We drove to PA, and in the hotel there - same thing! I was UPSET!!! Came home - and heard a SYSK podcast on this!!!!! Aha! They used to burn women as witches for this - always got this at night, told their minister - burned at stake. Always in older women, no know cause, no medical way to make it stop. Now called Idiopathic Benign Auditory Hallucination - hammers, gunshots, breaking glass, etc. Cure? Say out loud when it starts "This does not exist. It is just part of my sleep and dream cycle." Gone in 2 nights.