A tip I picked up from gransnet has helped me with my neck pain.
Take a pillow, without pillow case etc.
Tie the pillow firmly in the middle, so that it resembles a butterfly.
Cover with pillow protector etc.
This, for me, forms a cradle for my neck and is very comfortable to sleep on. This works for sleeping on either side or on the back.
Thinking of selling due to heat
