Pillow tips? Sleep tips?

Curious if any of you fellow Chiarians have tips for sleeping on pillows...Every night I toss and turn because my upper shoulders get so sore and just hurt/cant get comfortable. Now I've started sleeping with my pillow under my back starting mid back (the long way) going up to my head, and that seems to help. Does anyone else have severe shoulder tightening? What is that from exactly (still new to this!)?

Thank you all!

I use a very soft pillow under my head and sleep on my side with another pillow the long way beside me that i can pull in and scrunch up - sounds funny but it's what works for me.

I use a serta i comfort contour memory foam pillow and memory foam bed. Dont have any additional discomfort from sleeping. Still wake up every hour and a hslf but no discomfort. I am a back sleeper and the contour pillow helps alot