@Tfmonkey I've had a similar issue. I feared a torn cuff, the internet suggested bone spurs so I got an x-ray to be sure.
Thankfully, it turned out to be just a swelled bursa (soft tissue lining of the shoulder joint) causing discomfort during sleep (side sleeper) and inhibiting full range of motion, along with weight lifting problems. An anti-inflammatory fixed me right up.
Here's something that may prove useful 🍻: