Try to find a way to sleep with your head and neck in straight alignment just like when you are standing straight. What ever it takes to do this, just do it. I slept in a recliner while I learned what position helped. I got great sleep and woke without any headaches. If I messed up with sleeping posture, I would have stressful dreams and headaches. Often, they were what I called mud headaches. A dull ache like my head was packed full of mud and my thoughts were stuck in the mud.

Good quality sleep changed all of that.