idk wtf I did but I woke up 2 days ago with this pain in my shoulder right inside where the shoulder itself meets my chest and man it hurts. It's so bad in the morning I can't lift my arm over my head. But as the day goes on (and taking some nsaids) it lessens a bit.
What did I do to myself?
I had this earlier this year while staying with my inlaws for a few weeks. The mattress in their spare room was a super uncomfortable spring type and the pillow was way too thin and soft. I think the way I was sleeping to compensate for the discomfort of the bed was also putting a ton of pressure on my shoulder joint.
What helped me was alternating the side I slept on, positioning my shoulder in a way to avoid putting pressure on it while sleeping, and in the morning doing shoulder circles to slowly iron out my range of motion.